Most definitely. Personally, I never pretended otherwise. I try convincing my friends that adding a full exhaust on a street bike is a waste (especially without a re-tune) but it usually falls on deaf ears. I think it's the bragging rights people like about it.
Sound, looks, weight and optimizing my machine in general. I doubt that I got a significant power increase from my Arrow exhaust system. But I do like the fact that my engine is not so plugged anymore. In combination with a nice K&N airfilter and a powercommander I feel like the whole thing can finally breathe more freely. That was also a main argument for me.
ps.. obnoxiously loud because of the sheer POWER... lemme guess.. your one of those rice racers who think that bike should need to wind up to 12000 rpm to develop any torque and sound like 50 swarms of angry wasps whilst doing it?
So you can't afford one in other words, In fact you don't even have a bike but wish you did. And if you did have a bike you don't know how to ride it either.
Yes, I hated riding my bike with race pipes on it. So loud and practically gave me a headache after a 40 minute ride. Bought an Fz07 and I'm not touching the exhaust. It's so quiet, I can hardly hear it over the wind.
@@vexmau5 well, I went from stunt riding an F3, F4I, KAWI 636 then I stopped that and rode a 750 shadow for a few years. Now I have the FZ-07 and I love it. Is it the fastest I have ever had? No, but it's still fast enough. I love the low to mid range torque it has. Great for in town riding. The riding position is nice also. I looked up alot of reviews and riding videos before purchasing the Fz07 and nearly all were positive. Do you have experience?
DThompson T yes I do. I have nearly a year of experience with my R3 under my belt. I know it’s not a lot but I personally feel like I’m ready to move up the scale. Since I only have a year of experience, that’s why I’m looking at the Z650 and FZ-07. I’ve read all around that they’re good “beginner” bikes
@@vexmau5 I cant speak for the kawi but the FZ07 has good power, it's very light and its easy to handle. I dont know how "beginner" it is because it has enough pull to throw you off if your not careful but I started out on a 600cc and did fine with common sense. Dont act like an idiot with it and treat it properly and you should be fine.
I just want to praise Ari for his work, love his informative video’s which are efficient and not taking unnecessary time. Clear and to the point and very well presented. Sorry about your accident and you needed to stop. Thank you very much Ari!! Bless!!
I'm so happy with my stock exhaust. It's quiet and won't disturb anyone when I come home at two in the morning and it just sounds so sweet. It has a deep defined sound to it at idle and makes the bike sing at high rpms. But you can still talk over it and that is absolutely nice. Honda did a great job on that one. Also it really looks absolutely perfect. It's just has a stainless pipe for a muffler. I hate those modern round-ish looking pipes. I got a 2005 CBR 125. Not big, but what a sweet ride I tell you.
@@jakob6399 theres no questions about it not making it louder. It just does make alot louder, and if you disagree, you haven't owned a 125cc bike with an aftermarket exhaust.
@@jakob6399 I just put an Akrapovic exhaust on my ninja 125 and I can tell you, it’s loud, honestly a little too loud for my liking but it looks and sounds so much better than stock
I am propably the only one, that likes quit bikes. It's so much more awesome to get around "undercover", cause everytime you drive or ride something loud, people think you are probably 10mph faster than you actually are. I've been in a Tesla once, and nobody thinks you are driving too fast, cause you barely make any noise. (Still not going for electric vehicles.) Anyway, awesome vid Ari!
Agreed, just got a 2017 SV 650, this thing sounds awesome, but whenever i climb up to 50km/h in first gear, i see people turning around and looking at me like i was a maniac ! And this is with stock exhaust ...
Garrulus you're so right! I've Been hit twice in Los Angeles on my Motorcyle with a stock can because the ignorant cager just "couldn't hear me" ... After that I switched to aftermarket and haven't had any accidents since ! Why the fuck would anyone want to be "undercover" on a godamn Motorcyle ....
I get it! My friends tease me with my stock exhaust but i like being quiet. I don't see the need to noise-pollute whereever i go and when i go wildcamping it's nice not to alert everyone in a 10 km radius that i'm there. As for loud pipes saves lifes, i call bullshit! Until proven otherwise i assume people haven't seen or heard me and act accordingly. When somebody revbombs to get noticed peoples go-to reaction is to see who the moron is. If you want to alert of a dangerous situation... well thats what the horn is for. But i see very few people bragging about their aftermarket horn, because you can't see it and it only makes noise when you need it.
Tor Thrysøe It sounds like you go riding in the woods a lot and don't commute through heavy traffic as I do on A daily basis... With my stock can, cars would veer into my lane constantly (that's how I got into 2 major accidents) which could has easily ended up deadly , but with my aftermarket exhaust that has all ceased and they actually move out of my way , because they can hear me , I did not get my exhaust to look or sound cool , I got it because I got hit twice and was not going for a third . Loud pipes do indeed save lives .
I commute to/from Copenhagen 2-3 times a week, usually when rushhour is at its worst. I ride defensively and don't make assumptions that people have heard/seen me until im sure. I would not bet my life on people hearing my exhaust (which point the wrong way anyway). Heck, they can't even hear the sirens on emergency vehicles. Cars today are extremely soundproof. If i should mount something aftermarket to improve my safety (besides my aux lights) it would be a different horn. I don't mind people using aftermarket exhausts (as long as they are not obnoxiously loud), granted they look and sound cool. It's not for me but to each his own. But i don't subscribe to the "loud pipes saves lives" notion. It's probably a discussion that will last as long as there are ICE motorcycles :D
"Any weight you can remove from your motorcycle is gonna make it handle better" I noticed my DR650 was considerably faster and easier to toss into corners when I went from 280 pounds to 225.
My first and only real life conversation with a real racer (Scott Russell) was 10 minutes of talking about the weight of the rider and effects on the bike. I couldn’t believe he took so much time discussing it with me. That was 1996, I think. Long time ago. It amazes me how much thought actually goes in to the topic by racers around the world. Not only about body fat but also about how much muscle they want to gain or not gain.
Agree, I just slap on a slip-on any bike i use. Purely for aesthetics & a crisp sound. Modern bikes rarely need much performance enhancements unless you're seriously getting into racing. It tends to get very expensive to squeeze out about 3% - 5% extra ponies that have no real world benefit. Better to invest in suspension instead, tires included. The bike will feel way different. Another cool vid again btw.
I think its worth mentioning that even aftermarket exhaust companies are doing great advancements in this arena. Take Graves for example, not only do they make a great premium exhaust, but they also develop fuel maps and have optional sound suppressors for them. Recently they started selling exhaust with their own line of back pressure valves with custom back pressure mapping. Throw in their wideband O2 sensor kit and you really have an amazing performance package that's constantly adapting to the changing environment.. Its not just fancy plumbing these days.
Because a sportbike on the road, just doesnt make enough power. Gotta hold it wide open all the time right? A 1000 can make 180HP bone stock. Gotta spend 1000's to really make it go.
@@bradsanders6954 True, stock sportbikes are tuned for street riding and economy. To exploit its full potential at all engine speeds, need to spend $$$$$.
MC Garage make amazing content. Each video is just the right length, presented fantastically by this guy and he really puts the info across in an interesting, practical, visual and easily understandable way. I mean, there's literally nothing else that could make it better. BOOM! Thanks guys, keep it up, bravo.
racing tracks were designed because everyone is going the same speed roughly. racing on the road where everybody is at different speeds is a death sentence. but by all means.. add another to the natural selection list.. just dont take out anyone with you.
So where is the quality? Kid talks about backpressure like he's an engineer. A quick Google would have given him much scientific evidence that backpressure does nothing to improve performance, it actually hinders it. You want free-flowing exhaust, learned many decades ago.
Michael Cox peak hp sure a nice large pipe would be a good thing. But you loose torque. Crossovers in exhaust systems or headers by design may have some resistance to the exhaust to create a scavenging effect.
OR on the R6 you could have your ECU flashed skip the power commander and have a far better engine breaking experience & smoother power delivery oh and it makes up for the 8-10% incorrect speedo issue at least on the 06-16 models idk about the 2017. My personal opinion.
Brakes and breaks are not the same thing. Much like your and you're. Think I'm being fussy? Well no because it is the difference between knowing your shit and knowing you're shit.
@@stephenpenniket9976 Lol. Its funny cuz the your and you’re doesnt really bother me,but breaking vs braking for some reason does. Maybe because it has to do with something technical 🤷🏼♂️
@@harleyme3163 it happens even on scooters, the honda wave i use to stroll around town tends to pop it's exhaust (not necessarily loud pops as the stock exhaust is so damn muffling, but pops nonetheless) specially after going high rev on a climb then suddenly letting go of the throttle for descent, specially if the engine is cold
The loud pipes save lives theory is interesting. I’ve been on a loud Harley and have had several people come into my lane. My sport bike was quiet. I hardly had any issues.
I experimented years back on my loud ass Buell I had at the time. If my pipe was BEHIND the driver, they couldn't tell I was there unless I really opened the throttle. So the whole loud pipes thing didn't do any good unless I was trying to attract attention...which a horn can do. I didn't notice any change in driving behavior when I bought a new 1000RR and left it stock.
I always pair an exhaust with a tune. Honestly though I go aftermarket mostly for the sound and weight saving lol. If you add power, your bike only goes faster. You save weight, your bike goes faster and it's easier to maneuver.
ap1986 ari mentioned that when fuel mixture is lean due to. change of exhaust it will pop when decelarating... isnt that contradictory? i thought exhaust poping when you decelsrete was caused by a tooo rich fuel mixture...
don trump : i might be wrong, but i am pretty sure the popping is due to a mix with too much air, forcing second ignitions in the exhaust. It isn't because of too much fuel. That's at least why BMW 1000RR are popping all the time, or why BMW with N54/N55 engines (so 135i, 335i and so on) are popping SO MUCH : these are "fake" pops due to extra air purposely injected in the exhaust.
don trump my understanding is that it is more likely to pop because you're stock exhaust has baffles, your after market does not. So you're also getting an excessive amount of fresh air back in. Which you would've of had with your stock exhaust.
Well, I can kinda understand where they're coming from when you consider the serious air pollution problems which have plagued for example L.A in the past decades. Emission regulations put an end to that nonsense, because they forced manufacturers to develop ways to clean up the emissions to an acceptable level. I personally prefer having a quiet bike with a catalytic converter to having no bike at all.
I bet it's going to become Motorcyclist Magazine's most viewed video for 2017! Even though we're early in the year and I enjoyed a lot MC's content so far. It's a theme enverybody has an opinion on, and your treatment of it is as clear & precise as when you slashed the debate on "will WD 40 destroy your motorcycle chain O-rings". I hope this video too will get the attention it deserves!
When I raced motocross, the only time I bought an aftermarket exhaust was for my 1988 Honda CR500RJ. It was to soften the off the bottom and midrange hire and give it better (longer) top end. It made life easier on the close circuit track as well as cross country and for the Finke Desert Race in central Australia.
crisray6789 you mean like how modern emissions are tighter than ever but we now commonly have cars with over 500hp and bikes pushing past that 200hp mark? Emissions controls are one of the best things that ever happened to cars and bikes. Without them you'd still be tooling around around a carbureted POS smelling like raw fuel after a quick ride down the street because the OEM would have never had any incentive to improve the efficiency of the machines and spend countless millions on R&D making your bike or car cold start better, run and idle smoother, get better fuel economy and have more power.
Woha wait a minute here. Do you really care about fuel consumption while talking about motorcycles? (at tleast somewhat interestng ones, not scooters and sh!t) this is the last thing i care about. Better buy some 50ccm machine, if you care about every 0,01 l of petrol. I am proud ovner of 01 zx9R, and exactly because of those four big carburetors and overal simplicity and rawness of the bike, i will never sold her out. Just ram air intake, four cilynders, four carburetors, absolutely no electronic crap (shit like throttle control, abs etc.), and straight to wheel. You do not need neither diagnostics nor computer to properly maintain the bike, just a wrenchbox. And while talking about emissions,that is the absolute last thing i care about. I would gladly argue with you about those demonic CO2 exhalations (for simpletons, food for plants!) , NOx emissions (which are way lower from this dinosaurus that from modern diesels), or even that damn fuel consumption (4l/100km). Plus, the smell of that unburnt fuel exhaled through partially opened exhaust is quite pleasant for me, unlike that modern sterille machines. That somewhat not so smooth cold idle, or cold starts and such, for me, that just adds to the soul of my bike. You just need to know how to touch this machine, manipulate choke and throttle properly, know some basics of engine functionality, and you are perfectly okay.
I always get a chuckle out of people spending money to make their bikes lighter when they, themselves, could stand to lose 40 pounds. Anyone that isn't totally fit should worry about that before they worry about shaving a few pounds off their ride.
You honestly think that people spending money to make their bikes lighter need to lose weight? I weigh 12 and half stone and I'm 5ft 10in. My weight is perfect for my size. I wanted to make my bike lighter so it was easier to manoeuvre once I got off it, because I broke my collar bone and a rib after a nasty fall, and moving the bike down my garden path was a pain whilst I was recovering. Yeah I shouldn't have been moving it, but when there's no one to help you, you can only help yourself. Even after I fully recovered, I was getting pain for a while when the weather was cold, making me unable to move it as effectively. So I made it lighter. So don't laugh when people spend money on making their bikes lighter when you don't know the story, and don't say people need to lose weight because of it either. It makes sound like a complete dick.
B/c of emissions. The stock pipe is impressive given that it navigates so many objectives, but that doesn't mean it's the best option for outright performance.
@Vin Commons except many of these brands like akrapovic don't work out of their basements. They have collabs and tie ups with the bike brands to make exhaust for them. Why?? Stock exhaust has many limitations cuz of government regulations, performance is not the only objective of it.. sound, emissions, cost effectiveness.
After having Vance & Hines Straight Shots on my past two cruisers? I'm HAPPY with my stock exhaust on my '21 V-Strom 650XT Adventure. QUIET yet it gets throaty when I open her up.
An exhaust system has been carefully selected for OEM, more than 35 years ago. Even in the 80s, sportbikes exhaust were fine balanced for emisions and such. They have never been an "afterthought" ( at least for high performance engines.) And "huge gains" isn't exactly true. An exhaust has typically been the most bang for the least buck. Even today. It's the cheapest item, within consumers reach with the most seat of pants feel. YES, there are higher performing items out there, that provide a LOT more power. But they are expensive, and you also have to upgrade many other components to get it to work properly. In the end, an aftermarket pipe will almost always provide a quick bump in power. No matter how good the stock exhaust is, it is there to balance, mainly regulations. If regulations of EPA emmisions, noise, and such weren't the issue, very few companies would be able to outdo a stock setup. Actually comparatively speaking, i think todays OEM while finely tuned, has more restrictions than yesteryear. ( meaning you probably see bigger gains going to aftermarket, then you did 20, or 30 years ago.)
And I've yet to ever get a ticket for any aftermarket exhaust, in 40 years of riding. UGLY stock exhaust is the first thing to hit the scrap yard. I don't even bother to keep the UGLY things.
run that exhaust in the EU and u will get fucked if you crash cause the insurance isn´t gonna pay a dime. plus you will get stopped after every ride and get a ticket
it's all fun and games until you're involved in a big crash where other people get hurt and your insurance refuses to pay out by citing the always included undisclosed/illegal modifications caveat. just saying not hating 😉
I removed my stock exhaust on my GSXR 1100, replaced it with a Yosh pipe and it made a huge difference in power. Yosh had done a lot of R&D with Suzuki and the results were outstanding. It wasn't too loud, unless you got on it, so long trips weren't annoying.
The stock exhaust is best to use, after market pipes are too loud..they would wake up the wife when I tried leaving in the middle of the night to go bang my side chick. Even rolling the bike down the block, it still woke her up.
@@BobSmith-mc7uq Right? Lol... In fact she likes that he has loud pipes. That way the four dudes in her bed have plenty of time to put their pants on and jump out the window. Hahaha! What a duche
Yeah, though my bike runs lean but I can't do anything about it since no one makes a fuel unit for it. I do however love the pops, I also enjoy the rare occasions when it pops and gargles all together instead of just a single pop haha
Death666wish I just figured out how to induce popping on my 750 on decel by just barely blipping the throttle continually, barely, and it will pop all day from like 8-10k down to like 5k ...i can't stop, like a kid in a candy store.....so much fun lol
2019 MT10 here. I used some JB weld just on the tiny holes in the stock muffler and left everything else stock I got the sound I was looking for, For 10$ and some patience.
18 Wheels I think there are , at least every can or car muffler I have seen . I put on the Leo Vince mid pipe and love the sound now. With the stock muffler patched
camden thompson I'm a mechanic, it doesn't even require a mechanic knowledge to know that less weight on the drive train allows for an easier power application. It's just less lost torque/power. It's no wonder manufacturers try to shave off weight any way they can. Look at lotus, they don't have massive power in their engines but their car are lightweight, hence why they can chase the big cats on track.
Aftermarket wheels aren't good for a street bike as they aren't designed, nor can they handle, the stresses of potholes, long term use, etc... Race bike, they are great. Last I checked race tracks don't have potholes... lol
Not just power application, but agility as well. Less rotating mass, less gyroscopic effect, quicker turn-in and a "lighter," more "flickable" feeling bike. In my opinion, rotating mass is the top of the list in terms of weight shaving, then unsprung mass (wheels, brakes, suspension), then sprung mass. If you can get unsprung and rotating mass down with one change, that's even better. This is why I downsized to 14" wheels for my track MR2. At 11lbs. per rim compared to 12-14lbs. for a 15" rim, that's a very noticeable difference on track. The Lotus Elise (there's one at the shop now for a clutch) is a ton of fun to drive even with it's modest 210ish hp. We probably won't dyno this one because it's stock and there's no point. The Lotus Esprit (my shop's owner has two) isn't nearly as light or as small but it's still very fun to drive. Still very British though, so it essentially takes an electrical engineer to fix an electrical issue on it. And those issues are very common.
I guess DOT approval and 122K miles on the street would make carbon fiber wheels no good? www.brocksperformance.com/brocknm/templates/bpp1.aspx?articleid=797&zoneid=1
If you can get the same strength for lighter weight, you'll be faster off the line, and feel more agile going into a turn. The gyro effect of the wheels.
I purchased my NC750X from a dealer and used it for comuting 50 miles each day in mainly Motorway traffic. At the first service I mentioned that the performance was not so great in second gear, sport mode, at low revs and far worse in eco mode. They recommended the fitting of an Akropovic aftermarket silencer saying that this up the performance would impress me. It didn't.......the unit did weigh a few pounds less but apart from being a little louder the low rev performance was still dull. On checking the maker's own performance figures, for my £600 pounds I had gained a mere 1/2 hp.
Really enjoying the show, informative on so many levels. The R6 factory exhaust is so plane Jane! Didn’t want a full system so happy with the idea of a muffler now. TY keep up the good work
If you tune with a power commander you might as well not tune at all.... You have to get your ecm flashed or swapped with on OTS tune/ecm or get your bike on a dyno and get a custom tune.
Aftermarket exhausts sound great, but they draw so much attention. I'd rather go fast and sound slow than go slow and sound fast. I enjoy my sleeper =) And so do the people who live on the roads that I make my race track
Drivers are distracted even more these days by phones, computer screens and often seem to just have their head up their arse. I prefer to have a little more noise from my bike so they don't kill me through inattention. I wear a day-glow vest and my headlight on constantly but still get inattentive knobs saying sorry, I didn't see you. I'd rather make a bit more noise rather than being super quiet. Not annoyingly loud but just to get the dozy one's attention.
I agree, I also like to fly under the radar while riding. You can hear a bike ripping it from a mile away with an aftermarket pipe. Plus I commute on my bike and come home late a lot so I like to keep my neighbors happy.
depends where you ride i have a lot of small villages on my nice routes so having a stock exhaust helps to not piss of the locals and still have fun on the open parts with no houses
I agree with your assessment and it's the reason I stayed with my stock Multistrada 1200S exhaust. A whole lot of money for virtually no power gains with the aftermarket kits. I do wonder about dirt bike aftermarket exhaust though. Now you don't have to worry about emissions and less about noise too although too loud is always bad.. Friends tell me a pipe will do wonders for my stock YZ250F but I am skeptical. Something I wish you would have mentioned in the video is that sooo many riders think that when their bike becomes LOUDER, it is FASTER, which is so UNTRUE in so many cases.
Very informative! Slight issue with slip on is that they are not typically available to v2 vs. V4 engines. My cbr1000rr had a slip on yoshimura with power commander while my current tuono 660 had to be a full exhaust swap with upmap tune up
I have been doing motorsports all my life, and the sound regulations on track is actually harder on tracks in Europe then to be street legal, and although it is always a hassle to get there, it has made some manufacturers make really good preforming but silent systems, you can still get a meaty growl, but not the scream on high revs. An easy way is to put 2 full flow dampers in series
Yes you are right on the money!!! Messing with the exhaust alters the power curve and does not always help the motor at the RPM range most people ride at. WOT maybe, race bikes OK free flowing. Just bolting a loud exhaust does little for the bike, but may make the rider feel it is somehow better. Vahroom Vahroom....
If the bike is tuned they will make power. Most people forget the bike needs a ecu flash(very recommend) or the power commander route(more expensive) to get the full benefit of the full system.
Ljoel McHanley I’m not convinced you gained 12hp with just a slip on and a air filter with the stock system still in place and no tune, unless you put a video out of some hard numbers from a Dyno then I can believe it. I’ve had to flash my ecu, put in a full system and k & n air filter to draw that kind of hp from my bike around 15hp boost on my bike.
I don't know, I've always thought that manufacturers put a lot of thought and engineering into the exhaust systems. That being said, I did just install a Dominator GP1 full exhaust on my KTM 390 Adventure, and wow, it is loud!!! My next step is making it quieter, lol, quite possibly by putting on the "cobbled together, poorly engineered" OEM header back on with a resonator delete and a slip on. I appreciate the vid! Keep up the good work.
Good video, very fair, unbiased and full of info. The item that is compromised as much or perhaps more than the exhaust is the ECU. Reflashing it makes a huge difference, especially with Japanese bikes. A lot of the reason for the "breadbox" is mass centralization, coupled with style considerations. Otherwise you a truly heavy and ugly cannon strapped alongside the swing arm, far away from the mass center and in plain sight.
Factory exhaust gives a smooth feel during long runs and sound proof journeys whereas the aftermarket exhaust gives growling sound at idle and farting sound on high revs plus the extra sound hammers the brain in the long journey but that's good enough for mindless dudes.
It blows my mind how many people don't know you have to add fuel when you add air to your engine. Full exhaust, Intake and a Dyno tune will make a good bike great. Best bang for your buck when it comes to mods, but have to do all three at the same time.
msaleh93 "sound good" is a subjective term my friend what might sound good to u, may not sound good to me. its just like music. looks again depends on the make and model but in general most of the aftermarket pipes have a tricked out looking muffler. I think the manufacturers don't want to make the bike more expensive just for a nicer looking exhaust.
its mostly to do with cost, sound compliance, and emissions compliance. they want to make a single exhaust compliant with as many countries as possible so they have to design it around the harshest emissions and sound regulations. if they have to make multiple exhausts for various countries then it adds cost on their end which they then pass off to us when they sell the bikes. It always comes down to money and what the company needs to compromise in order to get the most money out of a single machine.
The aftermarket exhaust sounds better because it doesn't have to comply with noise or emission regulations, just like ThriceIND said. Also, manufacturers can cut the prices of their bikes by not having to install long, unnecessary exhaust pipes. The breadbox takes care of the noise and emissions, so just a short stub is needed. Most customers enjoy a bike that's cheaper than its rivals, which is good for business if your bike is the cheaper one.
Switching to aftermarket Cobra exhaust on my Honda Shadow was an overall good move. The stock exhaust weighed in at over 30lbs while the aftermarket pipes weighed only 18lbs total. The bike did run leaner after the switch, but a rejet and A/F tune fixed that. Best of all, a different but not necessarily louder sound from the Cobra pipes. Going from 1-5/8" to 2" tubing was a perfect step up all around.
On my 80s gt 750, my bike had an american made double skinned full length open pipes, they had a balance pipe, but absolutley no baffles, or sound reduction, took quite a long time to get the carbs re jetted, and needles in right position etc, ....sound was absolutey amazing, not just the usual rough loud spitting noise you got with drag pipes, this was a lovely quiet burble at low revs, blomblomblomblomblom😀, then opening it upgave you this incredible snarling deep roar, followed by extremely loud backfire pops and bangs on the over run😀
I've come to like my stock pipe on my little cb300r it has a nice piter pater and hums along nicely without blowing out my eardrums. When I bought the bike the dealership showed me an fz09 with a akrapovic and I physically could feel the vibrations coming from the bike when I was a solid 5-6 ft away. Quite obnoxious.
I think the main issue of changing exhausts is aftermarket is lighter, smaller, and look better. Loosing weight can help performance. Look at Sport Bikes with those Triangular Monstrosities. Japanese Cruisers with Giant Bazooka Sized Exhausts that ruin the lines of the bike. My bike is pre O2 sensor but I did have to install a Cobra Power Controller. I also put Lollypops in to help the Straight Pipes have some Back Pressure. The Pops also stopped complaints of riders behind me saying they were going deaf. They actually did help the Db's go down a lot.
Charlie Rodger do you really need to change fuel and air mixture when installing full system ive bought a full system for my honda cb125F and im curios if it will work well
I got an old Honda CB400 SuperFour a few months back. I bought it as a gift for my son to get him to go for his Full bike licence as he has been on a 125 for his 3rd year now, plus it sounded amazing! He has annoyed the hell out of me and so I thought bugger it, I will use it. Annoyiungly, I should have double checked the exhaust because even though it looked great, I have hardly done more than 200 miles and it started to pop, on close inspection, I found a hole in the No.3 downpipe... I took the exhaust off to get a proper look, and lo and behold, I find one of the rustiest setups that I have EVER seen, and after sopme wire brushing and trying to clean it up, I have come across more holes than a sieve... Thick coating of paint was all that was holding it all together! Even worse, is that the collector box, downpipes, and silencer, are all welded into one single piece and so even though the silencer is ok, I cannot get it off ( Might cut it and make a new connection ) I am however hoping that I can still save it, at least for long enough to let me have a couple of years use out of it.... I doubt it will weld although I got a mate who says he can weld anything no matter what, so lets see, but if not, I hope that the Heat resistant SteelStik will be my saviour. I have been told its good stuff, but does anyone have any experience with that? The holes are all just on the top of the bend on the downpipes... At the back... A few holes have appeared right after the join where it goes into the head port, and some are right on the corner, on the inside of the bend, and the farthest downm, there is some little holes about 4 inches, in total, on the two inside pipes, there is 12 holes, the largest is about 3/4 of an inch, so quite sizeable, but most are 1/8th of an inch give or take... I also have a couple of tins of Simoniz VHT Spray.. Rated 800c. Does anyone know roughly how hot the exhausts downpipes get on the CB400 SuperFour? Its a shame because the bike overall, is an amazing little thing that is small for sure, but so much fun to blip about on!
i guffaw when the lumps trot out the "loud pipes save lives" twaddle. I ask them what about ape hangers? what about frames that flex like wet pasta? my old harley handled like a shopping cart. loved the lope of the ignition sequence...and the stump pulling power but wasn't willing to settle for the dreadful bad handling
@@MetallicaSindre Never been caught yet since 1992 and I run an akropovic on my zx9r and a hindle on my R1. Hearing me is the least of my worries when I am riding.
Way more then a 5% gain with a proper specific tune to your bike, exhaust system and a performance air filter. You’re right about fuel economy, it will suffer a bit but who cares you got one life to live :P
@@hollowhills2973 haha £18+ over here in the UK for s 600rr and I can use that easily in a day, when I broke my ankle when I could get back on the bike to train again I pretty much went a spin each day or every second day that was almost £300 in fuel for the month hehe, and that was 35-40+ mpg I was getting.
An aftermarket exhaust WITH the servo valve retained is an awesome way to "make it legal" when needed. Provided you are smart enough to manually control the valve. This way you can have all the fun you want without disturbing people down town or in the neighborhood.
only half the picture. the reason you get better performance from a more free flowing exhaust is air. basically if your engine can pump more air and you add more fuel then you will get more power. the reason this video fails is you have to have a more free flowing intake and more fuel or an exhaust wont have much of an effect. imagine breathing all your inhales thru a straw while running. you will also have to modify the airbox and upgrade the filter.( make sure your engine cant suck water from rain,puddles etc can destroy engine by hydroastatic lock and instantly lock rear tire. important) so after you fix the intake and exhaust breathability you now need more fuel,(lean can damage an engine) in a carberated bike that means bigger jets and a lil trial and error/guessing plus a lot of hours swearing in the language of the country your bike was built by. with EFI you have better options. electronic fuel injection with a mass air flow sensor might be good to go you just have to put on enuff miles for the computer to relearn its fuel strategies....if you are not putting more air than the system can keep up with fuel wise. if not your upgrading fuel pump and injectors or adding an adjustable fuel pressure regulator or all 3 it depends. as most bikes dont have a mass air flow sensor they tend to have a system that uses look up tables. which put simply means the computer will know a few parameters and then look up the amount of fuel to add.e.g. at a specific rpm/air temperature/engine temperature/throttle opening etc it will look up on a chart and see what the best known fuel amount is. thats what reflashing is mostly about is changing the tables (or idk computers that deep) or maybe to add time to injector opening length charts. in the end more fuel in the correct amounts at the correct time=more power. the O2 sensor on these systems generally are only setting mixture ratios at idle to pass an emission test and the computer attempts to adapt the vehicle to you and your climate. it can adjust a slight lean/rich mixture. do not count on an O2 sensor making up for a pipe and an air box they cant. so what to do? really think about do i want more power or just the noise? if its just noise get a slip on and ride a few miles easy for a few rides give your computer time to adjust. should be good as long as your not going with an extreme slip on. if you want power than noise is a requirement not a choice, how much power do want. what you want is to maximize air in and out no weak links, and deliver the propa amount of fuel at the propa time. that all depends on what you choose how extreme your trying to go. one caveat for me is, brand new bike with a catalytic converter so putting a slip on would require cutting the stock exhaust which could be welded later but i dont want to cut it, i prefer to save in case i need for a sticker or to get the law off my back. so for me its a full system, air,fuel, hopefully i can find something not too loud that just needs a reflashing. just want to drop ten pounds, more responsive bike with say 3 to 15% more power than airbox/filter, full exhaust/pipe with a non extreme exhaust and than reflash at a minimum. probably a fuel controller. need to research cant go by online opinions from individuals. choose vetted sources. get your fuel delivery right or spend all that money for no gain or worse damage your engine.
Engineering an engine is more then just more fuel more air more power. Back pressure at specific rpms will increase your torque and give you better more consistent power through the entire range where as just maximum air and fuel will give you max power at one specific rpm, usually very close to your top end. In a race, having your power delivered throughout the entire rpm range, a flat torque curve, will give you the win if everything else is equal.
Nicely done. On the other hand, some of us riders are interested in adding just a dash of customization in the exhaust department. Not for power gains, but for some weight savings. Coincidence? You literally just brought up weight savings! Too funny! And, yeah, I do like a little style, and after riding for 55 years, I think I deserve it. 🤙😎
I put an Akrapovic complete exhaust on my 1999 R1. There was a saving of 5lb in weight, the power gain may have been small and yes it was noisy, but it altered the personality of the engine. Before it would rev, but it preferred not to. After it loved to be up around the red line. I was so in love with that bike, I only sold it last year. Now I ride a 1290 SAS: civilised, quiet and easy to ride (with the traction control on) much better suited to my 73 years, but that R1 was the best bike I ever owned.
"Manipulating backpressure" - please stop propagating wrong information. No backpressure is good backpressure. It's about exhaust length / resonance and tuning for peak or broad powerband. Larger diameter and/or shorter pipes tend to push power higher in the powerband (increasing the peak advertised value but possibly losing power in the mid-range). Longer pipes, smaller diameter, dual mufflers, and crossover pipes add volume and resonate lower in the RPM range (and frequently have a broader powerband with a lower peak advertised value). Long, conical mufflers tend to broaden powerband as well (as any musician who plays wind instruments can tell you - conical tubing resonates over a broader range with a "softer" sound). Aftermarket pipes perform with 1) less weight 2) reducing restriction at the expense of noise (less noise baffling) and 3) reducing restriction at the expense of emissions (no catalytic converter). Notice 2 out of 3 are reducing "backpressure"...
@@mandm060782 there is no such thing as backpressure. You will probably gain in performance at the expense of emitting nasty nitrogen compounds that are bad for the atmosphere. TL;DR stinky exhaust Edit: I should point out the performance gain is probably due to the reduce in the restriction (on some bikes, massive) due to the cat, and most of the benefit from exhaust or intake modification will only be realized from tuning.
@@sergiooliveira1127 that's actually quite possible, depending on the bike. Restrictions vary, and if it's a popular learners model in a certain market, chances are it's been choked from the exhaust.
Recently purchased a 2023 Ducati Desert Sled. Honestly really like the stock exhaust sounds. Deep Rumble and has that Ducati snarl that starts around 4k. Having said that, I will be tempted to shave 10 or more pounds off after the 2 year warranty is over by getting an Arrow or something.
The garage I bought my Honda 750 from actually recommended I purchase an Akropovic aftermarket can to improve the bike's performance. I did so and found my wallet like the new silencer was much lighter. The exhaust note was deeper but the performance not noticeably better. On checking various online test results I discovered that my $700 had gained me just 0.5 BHP across the range. So not really worth the effort or cost.
Yep I knew, just try slip on for different sounds, no leaks no hastle . Get rid of box only before they start smog! Great vid💪 don't forget to rejet in my case or EFI box adjust
I bought a Cbr 1000rr, and it has a slip on straight pipe. Literally hurts my right ear, so I bought a Power commander and full Yoshi exhaust. I'm excited to drop it off for install and tune next week. Can't imagine more power, bike is crazy fast now
![BLACK BAG - Official Trailer [HD] - Only in Theaters March 14](http://i.ytimg.com/vi/Du0Xp8WX_7I/mqdefault.jpg)
Admit it, most of us get an aftermarket exhaust coz of the sound
Marcus Loke and some solid weight savings
since when Buddha rides motorcycle?
Most definitely. Personally, I never pretended otherwise. I try convincing my friends that adding a full exhaust on a street bike is a waste (especially without a re-tune) but it usually falls on deaf ears. I think it's the bragging rights people like about it.
Sound, looks, weight and optimizing my machine in general. I doubt that I got a significant power increase from my Arrow exhaust system. But I do like the fact that my engine is not so plugged anymore. In combination with a nice K&N airfilter and a powercommander I feel like the whole thing can finally breathe more freely. That was also a main argument for me.
Marcus Loke Sound is an after thought with me. The aesthetics is why I get a slip on
_"Illegal because of noise and emissions compliance."_
[cue obnoxiously loud, street legal Harley drive-by]
Those Harleys usually have illegal exhaust as well
@@Blackflag.actual "illegal" meaning none
last week i saw some old bike, looked like it was from like the 50’s or 60’s, it drove by and after that huge bang, like it hurted my ears lmao
ps.. obnoxiously loud because of the sheer POWER... lemme guess.. your one of those rice racers who think that bike should need to wind up to 12000 rpm to develop any torque and sound like 50 swarms of angry wasps whilst doing it?
And half the street bikes and even cars and trucks these days.
“Look at me, look at me, pleeeese!”
Are you ATHLEAN-Xs younger brother??
💚😂
Just taller and more ripped😁
😂😂😂
@@emmanuelquerol He's definitely not more ripped. In great shape nonetheless, also around the same height
No homo...
His right arm is 2x bigger then his left.
What's wrong with you guys
I use aftermarket exhaust because it boosts my ego and Im racer wannabe..
So then you also have the Power rangers riding costume....Oh, I mean riding suit
@@toddlehman928 Correct, it has ego boosting technology
@@toddlehman928 Power rangers, unite!
So you can't afford one in other words, In fact you don't even have a bike but wish you did. And if you did have a bike you don't know how to ride it either.
@Stephen Penniket
Get a decent brain
If you ride long journeys the novelty of a loud exhaust gets old pretty quick.
Yes, I hated riding my bike with race pipes on it. So loud and practically gave me a headache after a 40 minute ride. Bought an Fz07 and I'm not touching the exhaust. It's so quiet, I can hardly hear it over the wind.
DThompson T I’m thinking of getting a FZ/MT-07. I’m torn between the Kawasaki Z650 and that one. What are your thoughts on the FZ/MT-07?
@@vexmau5 well, I went from stunt riding an F3, F4I, KAWI 636 then I stopped that and rode a 750 shadow for a few years. Now I have the FZ-07 and I love it. Is it the fastest I have ever had? No, but it's still fast enough. I love the low to mid range torque it has. Great for in town riding. The riding position is nice also. I looked up alot of reviews and riding videos before purchasing the Fz07 and nearly all were positive. Do you have experience?
DThompson T yes I do. I have nearly a year of experience with my R3 under my belt. I know it’s not a lot but I personally feel like I’m ready to move up the scale. Since I only have a year of experience, that’s why I’m looking at the Z650 and FZ-07. I’ve read all around that they’re good “beginner” bikes
@@vexmau5 I cant speak for the kawi but the FZ07 has good power, it's very light and its easy to handle. I dont know how "beginner" it is because it has enough pull to throw you off if your not careful but I started out on a 600cc and did fine with common sense. Dont act like an idiot with it and treat it properly and you should be fine.
I just want to praise Ari for his work, love his informative video’s which are efficient and not taking unnecessary time. Clear and to the point and very well presented. Sorry about your accident and you needed to stop. Thank you very much Ari!! Bless!!
yeah love those veins pop out when he holds a muffler
I'm so happy with my stock exhaust. It's quiet and won't disturb anyone when I come home at two in the morning and it just sounds so sweet. It has a deep defined sound to it at idle and makes the bike sing at high rpms. But you can still talk over it and that is absolutely nice. Honda did a great job on that one. Also it really looks absolutely perfect. It's just has a stainless pipe for a muffler. I hate those modern round-ish looking pipes.
I got a 2005 CBR 125. Not big, but what a sweet ride I tell you.
@@jakob6399 His 125 "sings" har har har.
@@jakob6399 theres no questions about it not making it louder. It just does make alot louder, and if you disagree, you haven't owned a 125cc bike with an aftermarket exhaust.
@@jakob6399 I just put an Akrapovic exhaust on my ninja 125 and I can tell you, it’s loud, honestly a little too loud for my liking but it looks and sounds so much better than stock
keep up with my 636 tho, fuck the neighbors live your life nerd just be quick!🫣
@@JonahZX10 Wow. Real nice mentality.
I am propably the only one, that likes quit bikes. It's so much more awesome to get around "undercover", cause everytime you drive or ride something loud, people think you are probably 10mph faster than you actually are. I've been in a Tesla once, and nobody thinks you are driving too fast, cause you barely make any noise. (Still not going for electric vehicles.)
Anyway, awesome vid Ari!
Agreed, just got a 2017 SV 650, this thing sounds awesome, but whenever i climb up to 50km/h in first gear, i see people turning around and looking at me like i was a maniac !
And this is with stock exhaust ...
Garrulus you're so right! I've Been hit twice in Los Angeles on my Motorcyle with a stock can because the ignorant cager just "couldn't hear me" ... After that I switched to aftermarket and haven't had any accidents since ! Why the fuck would anyone want to be "undercover" on a godamn Motorcyle ....
I get it! My friends tease me with my stock exhaust but i like being quiet. I don't see the need to noise-pollute whereever i go and when i go wildcamping it's nice not to alert everyone in a 10 km radius that i'm there.
As for loud pipes saves lifes, i call bullshit! Until proven otherwise i assume people haven't seen or heard me and act accordingly. When somebody revbombs to get noticed peoples go-to reaction is to see who the moron is. If you want to alert of a dangerous situation... well thats what the horn is for. But i see very few people bragging about their aftermarket horn, because you can't see it and it only makes noise when you need it.
Tor Thrysøe It sounds like you go riding in the woods a lot and don't commute through heavy traffic as I do on A daily basis... With my stock can, cars would veer into my lane constantly (that's how I got into 2 major accidents) which could has easily ended up deadly , but with my aftermarket exhaust that has all ceased and they actually move out of my way , because they can hear me , I did not get my exhaust to look or sound cool , I got it because I got hit twice and was not going for a third . Loud pipes do indeed save lives .
I commute to/from Copenhagen 2-3 times a week, usually when rushhour is at its worst. I ride defensively and don't make assumptions that people have heard/seen me until im sure.
I would not bet my life on people hearing my exhaust (which point the wrong way anyway). Heck, they can't even hear the sirens on emergency vehicles. Cars today are extremely soundproof. If i should mount something aftermarket to improve my safety (besides my aux lights) it would be a different horn.
I don't mind people using aftermarket exhausts (as long as they are not obnoxiously loud), granted they look and sound cool. It's not for me but to each his own. But i don't subscribe to the "loud pipes saves lives" notion. It's probably a discussion that will last as long as there are ICE motorcycles :D
"Any weight you can remove from your motorcycle is gonna make it handle better"
I noticed my DR650 was considerably faster and easier to toss into corners when I went from 280 pounds to 225.
Lol. Grats on the weight loss
Aye good on ya. I'm trying to lose some myself.
@Hugh Jaanus 225
Not ANY weight. Remove fuel tank and see.
My first and only real life conversation with a real racer (Scott Russell) was 10 minutes of talking about the weight of the rider and effects on the bike. I couldn’t believe he took so much time discussing it with me. That was 1996, I think. Long time ago. It amazes me how much thought actually goes in to the topic by racers around the world. Not only about body fat but also about how much muscle they want to gain or not gain.
love how short and simplyfied are these videos and yet you can learn so much from it!
Agree, I just slap on a slip-on any bike i use. Purely for aesthetics & a crisp sound. Modern bikes rarely need much performance enhancements unless you're seriously getting into racing. It tends to get very expensive to squeeze out about 3% - 5% extra ponies that have no real world benefit.
Better to invest in suspension instead, tires included. The bike will feel way different.
Another cool vid again btw.
Yep. If someone puts an exhaust on their bike but leaves the bald tires...
I guess different priorities than me.
gronkgrunk weight though
That’s due to headers. Adding a header with bigger ports plus slip on will increase almost 20% more.
I think its worth mentioning that even aftermarket exhaust companies are doing great advancements in this arena. Take Graves for example, not only do they make a great premium exhaust, but they also develop fuel maps and have optional sound suppressors for them. Recently they started selling exhaust with their own line of back pressure valves with custom back pressure mapping. Throw in their wideband O2 sensor kit and you really have an amazing performance package that's constantly adapting to the changing environment.. Its not just fancy plumbing these days.
Because a sportbike on the road, just doesnt make enough power.
Gotta hold it wide open all the time right? A 1000 can make 180HP bone stock.
Gotta spend 1000's to really make it go.
@@bradsanders6954 True, stock sportbikes are tuned for street riding and economy. To exploit its full potential at all engine speeds, need to spend $$$$$.
Has anyone seen the exhaust on a 2017 gsxr1000? I dont think anyone spent more than 5 minutes designing how that one looks.
+Tim Vine: Yeah, You could put a wheel on it and call it a sidecar. Ugliest exhaust I think I've ever seen.
Why worry ?
Nobody gonna leave it on there . . . . . .
Tim Vine Or a late model gsxr 1400 ninja??!!
Tim Vine Or of course the ugliest ever. The Suzi B King. Urrrgggghhhh!!!
Tim Vine was that the North Korean Missile rocket launcher silencer, so huge!
MC Garage make amazing content. Each video is just the right length, presented fantastically by this guy and he really puts the info across in an interesting, practical, visual and easily understandable way. I mean, there's literally nothing else that could make it better. BOOM! Thanks guys, keep it up, bravo.
So you're his Dad? Lol
agreed, he does a great job delivering.
Driving on LA freeways SHOULD be considered "closed course competition."
LOL..!!
racing tracks were designed because everyone is going the same speed roughly.
racing on the road where everybody is at different speeds is a death sentence.
but by all means.. add another to the natural selection list.. just dont take out anyone with you.
@@harleyme3163 it's called a joke.
@@harleyme3163 lighten up, man.
I bought the loudest exhaust system I could find the next day after lane splitting on the 101
+Motorcyclist Magazine You guys are killing it with these videos, great job, as usual. You deserve a lot more subscribers.
holymolie not until they start cranking out more vids regularly.
holymolie quality over quantity
So where is the quality? Kid talks about backpressure like he's an engineer. A quick Google would have given him much scientific evidence that backpressure does nothing to improve performance, it actually hinders it. You want free-flowing exhaust, learned many decades ago.
Michael Cox Honda
Michael Cox peak hp sure a nice large pipe would be a good thing. But you loose torque. Crossovers in exhaust systems or headers by design may have some resistance to the exhaust to create a scavenging effect.
OR on the R6 you could have your ECU flashed skip the power commander and have a far better engine breaking experience & smoother power delivery oh and it makes up for the 8-10% incorrect speedo issue at least on the 06-16 models idk about the 2017. My personal opinion.
Brakes and breaks are not the same thing. Much like your and you're. Think I'm being fussy? Well no because it is the difference between knowing your shit and knowing you're shit.
@@stephenpenniket9976 😂😂 so true
Ayyy didn’t know you rode motorcycles gundam
I like ECU flashes compared to fuel tuners as well
@@stephenpenniket9976 Lol.
Its funny cuz the your and you’re doesnt really bother me,but breaking vs braking for some reason does.
Maybe because it has to do with something technical 🤷🏼♂️
The popping and crackling on deceleration is one of my favourite parts of riding my bike.
Myles Prower Yup. Too lean
Chuck M not necessarily. Can mean too rich, and the fuel is burning in the exhaust due to the air injection system (like my z1000)
@@Me-yh4uc Popping in the exhaust literally means the fuel went unburnt in the engine, which happens if you suddenly decelerate.
yeah must be so great wasting fuel.. I mean... lets just dump all of it in there and make a cannon out of it.
@@harleyme3163 it happens even on scooters, the honda wave i use to stroll around town tends to pop it's exhaust (not necessarily loud pops as the stock exhaust is so damn muffling, but pops nonetheless) specially after going high rev on a climb then suddenly letting go of the throttle for descent, specially if the engine is cold
The loud pipes save lives theory is interesting. I’ve been on a loud Harley and have had several people come into my lane. My sport bike was quiet. I hardly had any issues.
Sportbikes are more colorful so they catch the eye> luxury vehicles with fancy sound systems and other technical distractions
I experimented years back on my loud ass Buell I had at the time. If my pipe was BEHIND the driver, they couldn't tell I was there unless I really opened the throttle. So the whole loud pipes thing didn't do any good unless I was trying to attract attention...which a horn can do.
I didn't notice any change in driving behavior when I bought a new 1000RR and left it stock.
Nothin beats old school intake sound through big filter box and in-line carbs + a magnum exhaust on a ZXR!
I always pair an exhaust with a tune. Honestly though I go aftermarket mostly for the sound and weight saving lol. If you add power, your bike only goes faster. You save weight, your bike goes faster and it's easier to maneuver.
ap1986 ari mentioned that when fuel mixture is lean due to. change of exhaust it will pop when decelarating...
isnt that contradictory?
i thought exhaust poping when you decelsrete was caused by a tooo rich fuel mixture...
don trump : i might be wrong, but i am pretty sure the popping is due to a mix with too much air, forcing second ignitions in the exhaust. It isn't because of too much fuel.
That's at least why BMW 1000RR are popping all the time, or why BMW with N54/N55 engines (so 135i, 335i and so on) are popping SO MUCH : these are "fake" pops due to extra air purposely injected in the exhaust.
don trump my understanding is that it is more likely to pop because you're stock exhaust has baffles, your after market does not. So you're also getting an excessive amount of fresh air back in. Which you would've of had with your stock exhaust.
backfire through intake is caused by a lean condition or advanced timing, backfire through exhaust is caused by a rich condition or retarded timing.
Popping in the exhaust can be caused by unburned fuel on overrun, a leaking header gasket or burned exhaust valves.
Is it even legal to fart in California without some kind of state government regulation?
Well, I can kinda understand where they're coming from when you consider the serious air pollution problems which have plagued for example L.A in the past decades. Emission regulations put an end to that nonsense, because they forced manufacturers to develop ways to clean up the emissions to an acceptable level. I personally prefer having a quiet bike with a catalytic converter to having no bike at all.
As long as you let loose in the Bay area they love the smell,they already have piles of s##t everywhere.
California politicians suck ass! Go TRUMP!!!
You have to fart into a tuba but WITH a catalytic converter installed.
daves996 Actually no. It blows.
I bet it's going to become Motorcyclist Magazine's most viewed video for 2017! Even though we're early in the year and I enjoyed a lot MC's content so far. It's a theme enverybody has an opinion on, and your treatment of it is as clear & precise as when you slashed the debate on "will WD 40 destroy your motorcycle chain O-rings".
I hope this video too will get the attention it deserves!
When I raced motocross, the only time I bought an aftermarket exhaust was for my 1988 Honda CR500RJ. It was to soften the off the bottom and midrange hire and give it better (longer) top end. It made life easier on the close circuit track as well as cross country and for the Finke Desert Race in central Australia.
Great video Ari! Nice touch cutting the stock in half for an insiders view. Keep up the good work!
as emissions get stricter the gains that can be made from aftermarket exhausts will only get greater
which is dumb
Corvette Have you seen the 2017 Suzuki gsxr1000/r that can is not just huge. It robs about 5-6hp from the bike.
More like 10.
crisray6789 you mean like how modern emissions are tighter than ever but we now commonly have cars with over 500hp and bikes pushing past that 200hp mark? Emissions controls are one of the best things that ever happened to cars and bikes. Without them you'd still be tooling around around a carbureted POS smelling like raw fuel after a quick ride down the street because the OEM would have never had any incentive to improve the efficiency of the machines and spend countless millions on R&D making your bike or car cold start better, run and idle smoother, get better fuel economy and have more power.
Woha wait a minute here. Do you really care about fuel consumption while talking about motorcycles? (at tleast somewhat interestng ones, not scooters and sh!t) this is the last thing i care about. Better buy some 50ccm machine, if you care about every 0,01 l of petrol. I am proud ovner of 01 zx9R, and exactly because of those four big carburetors and overal simplicity and rawness of the bike, i will never sold her out. Just ram air intake, four cilynders, four carburetors, absolutely no electronic crap (shit like throttle control, abs etc.), and straight to wheel. You do not need neither diagnostics nor computer to properly maintain the bike, just a wrenchbox. And while talking about emissions,that is the absolute last thing i care about. I would gladly argue with you about those demonic CO2 exhalations (for simpletons, food for plants!) , NOx emissions (which are way lower from this dinosaurus that from modern diesels), or even that damn fuel consumption (4l/100km). Plus, the smell of that unburnt fuel exhaled through partially opened exhaust is quite pleasant for me, unlike that modern sterille machines. That somewhat not so smooth cold idle, or cold starts and such, for me, that just adds to the soul of my bike. You just need to know how to touch this machine, manipulate choke and throttle properly, know some basics of engine functionality, and you are perfectly okay.
I always get a chuckle out of people spending money to make their bikes lighter when they, themselves, could stand to lose 40 pounds. Anyone that isn't totally fit should worry about that before they worry about shaving a few pounds off their ride.
I can't lose 40 pounds man i'd be dead
You honestly think that people spending money to make their bikes lighter need to lose weight? I weigh 12 and half stone and I'm 5ft 10in. My weight is perfect for my size. I wanted to make my bike lighter so it was easier to manoeuvre once I got off it, because I broke my collar bone and a rib after a nasty fall, and moving the bike down my garden path was a pain whilst I was recovering. Yeah I shouldn't have been moving it, but when there's no one to help you, you can only help yourself. Even after I fully recovered, I was getting pain for a while when the weather was cold, making me unable to move it as effectively. So I made it lighter. So don't laugh when people spend money on making their bikes lighter when you don't know the story, and don't say people need to lose weight because of it either. It makes sound like a complete dick.
itt: two people who can post comments but somehow can't read
Nathan Walker wtf kinda unit is "stone" lmao
Tomas right I’d assume 120 pounds 😂
if stock exhaust is that good why does yamaha have akrapovic on their site.
B/c of emissions. The stock pipe is impressive given that it navigates so many objectives, but that doesn't mean it's the best option for outright performance.
Because $
How is that even an argument?
Suzuki has Yoshimura as well ;)
@Vin Commons except many of these brands like akrapovic don't work out of their basements. They have collabs and tie ups with the bike brands to make exhaust for them. Why?? Stock exhaust has many limitations cuz of government regulations, performance is not the only objective of it.. sound, emissions, cost effectiveness.
After having Vance & Hines Straight Shots on my past two cruisers? I'm HAPPY with my stock exhaust on my '21 V-Strom 650XT Adventure. QUIET yet it gets throaty when I open her up.
An exhaust system has been carefully selected for OEM, more than 35 years ago. Even in the 80s, sportbikes exhaust were fine balanced for emisions and such. They have never been an "afterthought" ( at least for high performance engines.) And "huge gains" isn't exactly true. An exhaust has typically been the most bang for the least buck. Even today. It's the cheapest item, within consumers reach with the most seat of pants feel. YES, there are higher performing items out there, that provide a LOT more power. But they are expensive, and you also have to upgrade many other components to get it to work properly. In the end, an aftermarket pipe will almost always provide a quick bump in power. No matter how good the stock exhaust is, it is there to balance, mainly regulations. If regulations of EPA emmisions, noise, and such weren't the issue, very few companies would be able to outdo a stock setup. Actually comparatively speaking, i think todays OEM while finely tuned, has more restrictions than yesteryear. ( meaning you probably see bigger gains going to aftermarket, then you did 20, or 30 years ago.)
I'd say improved sound is dead last on the priority list for a race exhaust.
*LOL as if we care if its street legal 😅*
Night Rider exactly
I do
PetrosRZ i don't
And I've yet to ever get a ticket for any aftermarket exhaust, in 40 years of riding. UGLY stock exhaust is the first thing to hit the scrap yard. I don't even bother to keep the UGLY things.
run that exhaust in the EU and u will get fucked if you crash cause the insurance isn´t gonna pay a dime. plus you will get stopped after every ride and get a ticket
Lmao "closed course competition only" I laugh everytime I read that on any of my exhausts
And the irony is that race courses often have more restrictive noise standards than the street these days...
really? that sucks
Yup. By "normal" street standards it would still be loud but not as loud as some of the pipes that people opt to run.
Durtur Hurbs yeah, the average Harley makes more of a noise nuisance than a race pipe.
it's all fun and games until you're involved in a big crash where other people get hurt and your insurance refuses to pay out by citing the always included undisclosed/illegal modifications caveat. just saying not hating 😉
I removed my stock exhaust on my GSXR 1100, replaced it with a Yosh pipe and it made a huge difference in power. Yosh had done a lot of R&D with Suzuki and the results were outstanding. It wasn't too loud, unless you got on it, so long trips weren't annoying.
You did not have the closedcourse baffle like the vance and hines that thing was TOO LOUD
You have a GSXR1100???
@@jlcomte I "had". Sold it.
The stock exhaust is best to use, after market pipes are too loud..they would wake up the wife when I tried leaving in the middle of the night to go bang my side chick. Even rolling the bike down the block, it still woke her up.
Half. Not to worry, she had her side dude hiding out in the garage, he was glad to see you go!
@@BobSmith-mc7uq Right? Lol... In fact she likes that he has loud pipes. That way the four dudes in her bed have plenty of time to put their pants on and jump out the window. Hahaha! What a duche
In Oklahoma there is NO sound limit to enforce lol
Hahaaa
take a bicycle in that case
You guys should do a video on backfire
*afterfire
Daniel Tilton that's normal
"My exhaust pops on decel FML kill me now", said no one ever.
Yeah, though my bike runs lean but I can't do anything about it since no one makes a fuel unit for it. I do however love the pops, I also enjoy the rare occasions when it pops and gargles all together instead of just a single pop haha
Death666wish I just figured out how to induce popping on my 750 on decel by just barely blipping the throttle continually, barely, and it will pop all day from like 8-10k down to like 5k ...i can't stop, like a kid in a candy store.....so much fun lol
2019 MT10 here. I used some JB weld just on the tiny holes in the stock muffler and left everything else stock I got the sound I was looking for, For 10$ and some patience.
18 Wheels I think there are , at least every can or car muffler I have seen . I put on the Leo Vince mid pipe and love the sound now. With the stock muffler patched
Can you do an episode on lightweight wheels? stock vs ali/magnesium vs carbon fiber? are they worth the premium price?
camden thompson I'm a mechanic, it doesn't even require a mechanic knowledge to know that less weight on the drive train allows for an easier power application. It's just less lost torque/power. It's no wonder manufacturers try to shave off weight any way they can. Look at lotus, they don't have massive power in their engines but their car are lightweight, hence why they can chase the big cats on track.
Aftermarket wheels aren't good for a street bike as they aren't designed, nor can they handle, the stresses of potholes, long term use, etc... Race bike, they are great. Last I checked race tracks don't have potholes... lol
Not just power application, but agility as well. Less rotating mass, less gyroscopic effect, quicker turn-in and a "lighter," more "flickable" feeling bike. In my opinion, rotating mass is the top of the list in terms of weight shaving, then unsprung mass (wheels, brakes, suspension), then sprung mass. If you can get unsprung and rotating mass down with one change, that's even better. This is why I downsized to 14" wheels for my track MR2. At 11lbs. per rim compared to 12-14lbs. for a 15" rim, that's a very noticeable difference on track.
The Lotus Elise (there's one at the shop now for a clutch) is a ton of fun to drive even with it's modest 210ish hp. We probably won't dyno this one because it's stock and there's no point. The Lotus Esprit (my shop's owner has two) isn't nearly as light or as small but it's still very fun to drive. Still very British though, so it essentially takes an electrical engineer to fix an electrical issue on it. And those issues are very common.
I guess DOT approval and 122K miles on the street would make carbon fiber wheels no good? www.brocksperformance.com/brocknm/templates/bpp1.aspx?articleid=797&zoneid=1
If you can get the same strength for lighter weight, you'll be faster off the line, and feel more agile going into a turn. The gyro effect of the wheels.
I purchased my NC750X from a dealer and used it for comuting 50 miles each day in mainly Motorway traffic. At the first service I mentioned that the performance was not so great in second gear, sport mode, at low revs and far worse in eco mode. They recommended the fitting of an Akropovic aftermarket silencer saying that this up the performance would impress me. It didn't.......the unit did weigh a few pounds less but apart from being a little louder the low rev performance was still dull. On checking the maker's own performance figures, for my £600 pounds I had gained a mere 1/2 hp.
Really enjoying the show, informative on so many levels. The R6 factory exhaust is so plane Jane! Didn’t want a full system so happy with the idea of a muffler now. TY keep up the good work
If you tune with a power commander you might as well not tune at all.... You have to get your ecm flashed or swapped with on OTS tune/ecm or get your bike on a dyno and get a custom tune.
Aftermarket exhausts sound great, but they draw so much attention. I'd rather go fast and sound slow than go slow and sound fast. I enjoy my sleeper =) And so do the people who live on the roads that I make my race track
More like draw so much annoyance :).
Drivers are distracted even more these days by phones, computer screens and often seem to just have their head up their arse. I prefer to have a little more noise from my bike so they don't kill me through inattention. I wear a day-glow vest and my headlight on constantly but still get inattentive knobs saying sorry, I didn't see you. I'd rather make a bit more noise rather than being super quiet. Not annoyingly loud but just to get the dozy one's attention.
Typical ignorant US-biker-attitude: Smart bikers just realize that you have to ride as if no one saw you.
I agree, I also like to fly under the radar while riding. You can hear a bike ripping it from a mile away with an aftermarket pipe.
Plus I commute on my bike and come home late a lot so I like to keep my neighbors happy.
Guess you never heard how that's nonsense.
depends where you ride i have a lot of small villages on my nice routes so having a stock exhaust helps to not piss of the locals and still have fun on the open parts with no houses
I agree with your assessment and it's the reason I stayed with my stock Multistrada 1200S exhaust. A whole lot of money for virtually no power gains with the aftermarket kits. I do wonder about dirt bike aftermarket exhaust though. Now you don't have to worry about emissions and less about noise too although too loud is always bad.. Friends tell me a pipe will do wonders for my stock YZ250F but I am skeptical. Something I wish you would have mentioned in the video is that sooo many riders think that when their bike becomes LOUDER, it is FASTER, which is so UNTRUE in so many cases.
Very informative! Slight issue with slip on is that they are not typically available to v2 vs. V4 engines. My cbr1000rr had a slip on yoshimura with power commander while my current tuono 660 had to be a full exhaust swap with upmap tune up
weight off the gut should be prioritized imo. :)
Forrest Shalom slimfast is cheaper than carbon fibre!
slimfast is rubbish. slim down permanently and sustainably with cheese.
@@jamesforrestal403 I hear starvation is cheaper
I saw the muffler and thought, "Nice pipes." Then I noticed the absolute pythons this dude has and thought, "Niiiiiice pipes."
....yep....
Another great video... well done mann👍🏻👍🏻👍🏻👍🏻👍🏻
I have been doing motorsports all my life, and the sound regulations on track is actually harder on tracks in Europe then to be street legal, and although it is always a hassle to get there, it has made some manufacturers make really good preforming but silent systems, you can still get a meaty growl, but not the scream on high revs.
An easy way is to put 2 full flow dampers in series
Yes you are right on the money!!! Messing with the exhaust alters the power curve and does not always help the motor at the RPM range most people ride at. WOT maybe, race bikes OK free flowing. Just bolting a loud exhaust does little for the bike, but may make the rider feel it is somehow better. Vahroom Vahroom....
Slip on mufflers make noise. Full systems make power.
Slip-On mufflers can add power too, but only few in comparison with a link pipe or even a full system.
not always true, I gained a pretty massive 12 hp on my Bandit 1200 with M4 slip on and K&N filter.
@@ljoelmchanley3676 and no tune?
If the bike is tuned they will make power. Most people forget the bike needs a ecu flash(very recommend) or the power commander route(more expensive) to get the full benefit of the full system.
Ljoel McHanley I’m not convinced you gained 12hp with just a slip on and a air filter with the stock system still in place and no tune, unless you put a video out of some hard numbers from a Dyno then I can believe it. I’ve had to flash my ecu, put in a full system and k & n air filter to draw that kind of hp from my bike around 15hp boost on my bike.
So what you're saying is I need to get an aftermarket exhaust
Why don´t you compare the stock exhaust with a street legal aftermarket exhaust? Street legal full systems exist and slip ons would be interesting to.
I don't know, I've always thought that manufacturers put a lot of thought and engineering into the exhaust systems. That being said, I did just install a Dominator GP1 full exhaust on my KTM 390 Adventure, and wow, it is loud!!! My next step is making it quieter, lol, quite possibly by putting on the "cobbled together, poorly engineered" OEM header back on with a resonator delete and a slip on. I appreciate the vid! Keep up the good work.
Good video, very fair, unbiased and full of info.
The item that is compromised as much or perhaps more than the exhaust is the ECU. Reflashing it makes a huge difference, especially with Japanese bikes.
A lot of the reason for the "breadbox" is mass centralization, coupled with style considerations. Otherwise you a truly heavy and ugly cannon strapped alongside the swing arm, far away from the mass center and in plain sight.
Sound is a huge factor when selecting an aftermarket exhaust for me. Pure music!
Factory exhaust gives a smooth feel during long runs and sound proof journeys whereas the aftermarket exhaust gives growling sound at idle and farting sound on high revs plus the extra sound hammers the brain in the long journey but that's good enough for mindless dudes.
Great cutaway of the stock pipe's cross-section. I've always wondered what's inside my Bandit's mammoth pipe. Now I know.
Still riding the stock exhaust on my 2002. And it's the quietest motorcycle on the street and I love it.
It blows my mind how many people don't know you have to add fuel when you add air to your engine. Full exhaust, Intake and a Dyno tune will make a good bike great. Best bang for your buck when it comes to mods, but have to do all three at the same time.
Why cant they put effort to make the stock exhaust look nice and sound good? That after market exhaust looks and sounds waay better
msaleh93 "sound good" is a subjective term my friend what might sound good to u, may not sound good to me. its just like music.
looks again depends on the make and model but in general most of the aftermarket pipes have a tricked out looking muffler. I think the manufacturers don't want to make the bike more expensive just for a nicer looking exhaust.
msaleh93 the only sport bike stock exhaust looks good are s1krr,r6,2012 cbr1000rr,they all looks sharper,smaller
its mostly to do with cost, sound compliance, and emissions compliance. they want to make a single exhaust compliant with as many countries as possible so they have to design it around the harshest emissions and sound regulations. if they have to make multiple exhausts for various countries then it adds cost on their end which they then pass off to us when they sell the bikes. It always comes down to money and what the company needs to compromise in order to get the most money out of a single machine.
Ducati does well on their stock exhaust
The aftermarket exhaust sounds better because it doesn't have to comply with noise or emission regulations, just like ThriceIND said. Also, manufacturers can cut the prices of their bikes by not having to install long, unnecessary exhaust pipes. The breadbox takes care of the noise and emissions, so just a short stub is needed. Most customers enjoy a bike that's cheaper than its rivals, which is good for business if your bike is the cheaper one.
My M4 slip on for my 636 gives me eargasms every time.... :)
I'm planning on getting one soon. Maybe next month. Haven't heard it in real life yet, but it sounds pretty fucking sweet on RUclips.
two of my friends have the M4 slip on exhaust, decat with power commander on their 636's. Sounds absolutely amazing
JustGamer haha, Yeah me too! I love the m4 gp slip on on my 2016 Suzuki gsx-s1000, it sounds soooooo good😈
JustGamer i
C Stephenson Suzuki, damn you're one gay nigga
Switching to aftermarket Cobra exhaust on my Honda Shadow was an overall good move. The stock exhaust weighed in at over 30lbs while the aftermarket pipes weighed only 18lbs total. The bike did run leaner after the switch, but a rejet and A/F tune fixed that. Best of all, a different but not necessarily louder sound from the Cobra pipes. Going from 1-5/8" to 2" tubing was a perfect step up all around.
On my 80s gt 750, my bike had an american made double skinned full length open pipes, they had a balance pipe, but absolutley no baffles, or sound reduction, took quite a long time to get the carbs re jetted, and needles in right position etc, ....sound was absolutey amazing, not just the usual rough loud spitting noise you got with drag pipes, this was a lovely quiet burble at low revs, blomblomblomblomblom😀, then opening it upgave you this incredible snarling deep roar, followed by extremely loud backfire pops and bangs on the over run😀
I've come to like my stock pipe on my little cb300r it has a nice piter pater and hums along nicely without blowing out my eardrums. When I bought the bike the dealership showed me an fz09 with a akrapovic and I physically could feel the vibrations coming from the bike when I was a solid 5-6 ft away. Quite obnoxious.
I love the stock system on my 95 Honda Dominator!! No way am I changing it.
Thanks for thorough analysis, telling us clearly pros and cons.
Your clear explanation no hype or speculation!
😊
I'll take performance over sound or looks every time.
Id take the sound over the minimal performance difference anytime.
I don't like how my 2023 suzuki sv650 loses gains on the top end with my muffler off. But it sure sounds amazing. And nicely loud.
I think the main issue of changing exhausts is aftermarket is lighter, smaller, and look better. Loosing weight can help performance. Look at Sport Bikes with those Triangular Monstrosities. Japanese Cruisers with Giant Bazooka Sized Exhausts that ruin the lines of the bike. My bike is pre O2 sensor but I did have to install a Cobra Power Controller. I also put Lollypops in to help the Straight Pipes have some Back Pressure. The Pops also stopped complaints of riders behind me saying they were going deaf. They actually did help the Db's go down a lot.
watching this while installing a full system
Charlie Rodger do you really need to change fuel and air mixture when installing full system ive bought a full system for my honda cb125F and im curios if it will work well
Loud exhaust lets the cops know where you are. I prefer stealth.
Yes 100% but the upside to that is it makes car, truck, bus, and pedestrians aware of where you are.
Or getting smacked off your bike because someone didn't hear you
HA! Jokes on you, I cant even afford a bottom dollar bike T.T
Haah...me too
That is nothing to brag about.
One of the cheapest Sport Bike you can buy is the Lifan KPR-200. It's a chinese bike but it's not the bad. It's water cooled and fuel injected.
I got an old Honda CB400 SuperFour a few months back.
I bought it as a gift for my son to get him to go for his Full bike licence as he has been on a 125 for his 3rd year now, plus it sounded amazing!
He has annoyed the hell out of me and so I thought bugger it, I will use it.
Annoyiungly, I should have double checked the exhaust because even though it looked great, I have hardly done more than 200 miles and it started to pop, on close inspection, I found a hole in the No.3 downpipe... I took the exhaust off to get a proper look, and lo and behold, I find one of the rustiest setups that I have EVER seen, and after sopme wire brushing and trying to clean it up, I have come across more holes than a sieve... Thick coating of paint was all that was holding it all together!
Even worse, is that the collector box, downpipes, and silencer, are all welded into one single piece and so even though the silencer is ok, I cannot get it off ( Might cut it and make a new connection )
I am however hoping that I can still save it, at least for long enough to let me have a couple of years use out of it.... I doubt it will weld although I got a mate who says he can weld anything no matter what, so lets see, but if not, I hope that the Heat resistant SteelStik will be my saviour.
I have been told its good stuff, but does anyone have any experience with that?
The holes are all just on the top of the bend on the downpipes... At the back... A few holes have appeared right after the join where it goes into the head port, and some are right on the corner, on the inside of the bend, and the farthest downm, there is some little holes about 4 inches, in total, on the two inside pipes, there is 12 holes, the largest is about 3/4 of an inch, so quite sizeable, but most are 1/8th of an inch give or take...
I also have a couple of tins of Simoniz VHT Spray.. Rated 800c.
Does anyone know roughly how hot the exhausts downpipes get on the CB400 SuperFour?
Its a shame because the bike overall, is an amazing little thing that is small for sure, but so much fun to blip about on!
i guffaw when the lumps trot out the "loud pipes save lives" twaddle. I ask them what about ape hangers? what about frames that flex like wet pasta? my old harley handled like a shopping cart. loved the lope of the ignition sequence...and the stump pulling power but wasn't willing to settle for the dreadful bad handling
Loud exhaust helps cops find you when you're trying to run from them....
Never been a problem for me.
If they can hear you, then you're driving to slow ;)
@@MetallicaSindre Never been caught yet since 1992 and I run an akropovic on my zx9r and a hindle on my R1. Hearing me is the least of my worries when I am riding.
He didn’t mention the loss of 20 to 25% of your fuel economy with performance exhaust and fuel mapping for about 5% power gain.
Way more then a 5% gain with a proper specific tune to your bike, exhaust system and a performance air filter. You’re right about fuel economy, it will suffer a bit but who cares you got one life to live :P
It cost like $3 to fill the tank.... God forbid you having to fill up every 4.5 days instead of every 5
@@hollowhills2973 haha £18+ over here in the UK for s 600rr and I can use that easily in a day, when I broke my ankle when I could get back on the bike to train again I pretty much went a spin each day or every second day that was almost £300 in fuel for the month hehe, and that was 35-40+ mpg I was getting.
"Slip-on mufflers are easier to install" unless you have a FZ-09. 😔
Or a cbr600rr 😔
An aftermarket exhaust WITH the servo valve retained is an awesome way to "make it legal" when needed. Provided you are smart enough to manually control the valve.
This way you can have all the fun you want without disturbing people down town or in the neighborhood.
You need to dyno and reprogram the bike if you swap out too much exhaust. In some states it may illegal to swap out with something louder than stock.
only half the picture. the reason you get better performance from a more free flowing exhaust is air. basically if your engine can pump more air and you add more fuel then you will get more power. the reason this video fails is you have to have a more free flowing intake and more fuel or an exhaust wont have much of an effect. imagine breathing all your inhales thru a straw while running. you will also have to modify the airbox and upgrade the filter.( make sure your engine cant suck water from rain,puddles etc can destroy engine by hydroastatic lock and instantly lock rear tire. important)
so after you fix the intake and exhaust breathability you now need more fuel,(lean can damage an engine)
in a carberated bike that means bigger jets and a lil trial and error/guessing plus a lot of hours swearing in the language of the country your bike was built by.
with EFI you have better options. electronic fuel injection with a mass air flow sensor might be good to go you just have to put on enuff miles for the computer to relearn its fuel strategies....if you are not putting more air than the system can keep up with fuel wise. if not your upgrading fuel pump and injectors or adding an adjustable fuel pressure regulator or all 3 it depends.
as most bikes dont have a mass air flow sensor they tend to have a system that uses look up tables. which put simply means the computer will know a few parameters and then look up the amount of fuel to add.e.g. at a specific rpm/air temperature/engine temperature/throttle opening etc it will look up on a chart and see what the best known fuel amount is. thats what reflashing is mostly about is changing the tables (or idk computers that deep) or maybe to add time to injector opening length charts. in the end more fuel in the correct amounts at the correct time=more power.
the O2 sensor on these systems generally are only setting mixture ratios at idle to pass an emission test and the computer attempts to adapt the vehicle to you and your climate. it can adjust a slight lean/rich mixture. do not count on an O2 sensor making up for a pipe and an air box they cant.
so what to do? really think about do i want more power or just the noise? if its just noise get a slip on and ride a few miles easy for a few rides give your computer time to adjust. should be good as long as your not going with an extreme slip on.
if you want power than noise is a requirement not a choice, how much power do want. what you want is to maximize air in and out no weak links, and deliver the propa amount of fuel at the propa time. that all depends on what you choose how extreme your trying to go.
one caveat for me is, brand new bike with a catalytic converter so putting a slip on would require cutting the stock exhaust which could be welded later but i dont want to cut it, i prefer to save in case i need for a sticker or to get the law off my back. so for me its a full system, air,fuel, hopefully i can find something not too loud that just needs a reflashing.
just want to drop ten pounds, more responsive bike with say 3 to 15% more power than airbox/filter, full exhaust/pipe with a non extreme exhaust and than reflash at a minimum. probably a fuel controller. need to research cant go by online opinions from individuals. choose vetted sources. get your fuel delivery right or spend all that money for no gain or worse damage your engine.
Engineering an engine is more then just more fuel more air more power. Back pressure at specific rpms will increase your torque and give you better more consistent power through the entire range where as just maximum air and fuel will give you max power at one specific rpm, usually very close to your top end. In a race, having your power delivered throughout the entire rpm range, a flat torque curve, will give you the win if everything else is equal.
Engineer here... The Cats in modern exhausts cause extreme exhaust temps that don't allow the ecu to advance timing to it's potential... so -15 hp ish
I bought a aftermarket exhaust and with that it gained 15hp more due to the lack of catalysator, plus I got a power-commander!
Brock tested it on the dyno and the exhaust valve is only for noise and emissions. Removing it made more hp and torque right through the rev range.
Nicely done.
On the other hand, some of us riders are interested in adding just a dash of customization in the exhaust department. Not for power gains, but for some weight savings. Coincidence? You literally just brought up weight savings! Too funny!
And, yeah, I do like a little style, and after riding for 55 years, I think I deserve it. 🤙😎
6-10% power increase from just a exhaust is not a lot of power to you?
what brand of exhaust that give that much power increase by only installing exhaust?
Stock exhaust sounds like a leaf blower 😂
Speak for yourself,mines soounds just as good as aftermarket bs
@ ummm no its not,im deas serious.
Just Lean show some proof man
@ some motorcycle comes with good sounding exhaust
hehehe 😅
don't throw out your old pipes , they are worth a fortune.
How can an aftermarket exhaust system make the engine run lean when an O2 sensor is adjusting the air/fuel mixture?
I put an Akrapovic complete exhaust on my 1999 R1. There was a saving of 5lb in weight, the power gain may have been small and yes it was noisy, but it altered the personality of the engine. Before it would rev, but it preferred not to. After it loved to be up around the red line. I was so in love with that bike, I only sold it last year. Now I ride a 1290 SAS: civilised, quiet and easy to ride (with the traction control on) much better suited to my 73 years, but that R1 was the best bike I ever owned.
"Manipulating backpressure" - please stop propagating wrong information. No backpressure is good backpressure. It's about exhaust length / resonance and tuning for peak or broad powerband. Larger diameter and/or shorter pipes tend to push power higher in the powerband (increasing the peak advertised value but possibly losing power in the mid-range). Longer pipes, smaller diameter, dual mufflers, and crossover pipes add volume and resonate lower in the RPM range (and frequently have a broader powerband with a lower peak advertised value). Long, conical mufflers tend to broaden powerband as well (as any musician who plays wind instruments can tell you - conical tubing resonates over a broader range with a "softer" sound). Aftermarket pipes perform with 1) less weight 2) reducing restriction at the expense of noise (less noise baffling) and 3) reducing restriction at the expense of emissions (no catalytic converter). Notice 2 out of 3 are reducing "backpressure"...
JustTheOtherDave schooled
What would you say about removing just the cat to gain in sound and reduce weight. Will back pressure be compromised?
@@mandm060782 there is no such thing as backpressure. You will probably gain in performance at the expense of emitting nasty nitrogen compounds that are bad for the atmosphere.
TL;DR stinky exhaust
Edit: I should point out the performance gain is probably due to the reduce in the restriction (on some bikes, massive) due to the cat, and most of the benefit from exhaust or intake modification will only be realized from tuning.
THIS GUY IS A ENGINEER DESIGNING ENGINES FOR? HAHA. HE HAS THE BACK PRESSURE.
Yo lemme just block the exhaust
Put cement in there to ballance the torque curve!
Bikers I see need to halve the weight off of their gut and leave the bike alone.
Some room? Got 30hp from tune + full exhaust. Also lost 19lbs...
on what type of bike?
30 HP from tune and exhust!? Hell no lol.
Maybe on a Turbo Hayabusa lol
@@sergiooliveira1127 that's actually quite possible, depending on the bike. Restrictions vary, and if it's a popular learners model in a certain market, chances are it's been choked from the exhaust.
@@barbaramclellan2876 Yes, you are.
You got conned if the dyno you were on gave you a 30hp increase after a basic tune
Recently purchased a 2023 Ducati Desert Sled. Honestly really like the stock exhaust sounds. Deep Rumble and has that Ducati snarl that starts around 4k. Having said that, I will be tempted to shave 10 or more pounds off after the 2 year warranty is over by getting an Arrow or something.
The garage I bought my Honda 750 from actually recommended I purchase an Akropovic aftermarket can to improve the bike's performance. I did so and found my wallet like the new silencer was much lighter. The exhaust note was deeper but the performance not noticeably better. On checking various online test results I discovered that my $700 had gained me just 0.5 BHP across the range. So not really worth the effort or cost.
Well they make your engine breath how it was originally designed too , before the noise and emission regulations strangle them
I can attest to this
Peel the stickers off and no one will ever know
In Australia it is illegal not to have the makers name on your aftermarket exhaust
Am i the only one who thinks his eyes are red by smoking some dank kush?
Jip Hoi he said it was meth
Dude he looks AND sounds high!
Yep I knew, just try slip on for different sounds, no leaks no hastle . Get rid of box only before they start smog! Great vid💪 don't forget to rejet in my case or EFI box adjust
I bought a Cbr 1000rr, and it has a slip on straight pipe. Literally hurts my right ear, so I bought a Power commander and full Yoshi exhaust. I'm excited to drop it off for install and tune next week. Can't imagine more power, bike is crazy fast now