7 Things Your NEXT Exhaust NEEDS- and 7 things to avoid!
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- Опубликовано: 27 сен 2024
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Can't wait for all the experts to come out from the woodwork who "know better" Good job FMU very informative.
it's not that deep
It really isnt, you are right @@dcgeeked8917
I would love to see a before/after compilation of your megaphones
They won't ever do this because it doesn't make a noticeable change
I just saw a video this past week with dyno results. He also mentioned how it is a struggle to find the best location for them to not only fit underneath car, but to actually improve engine performance. Note: I hope I'm not confusing 2 different videos in regards to the dyno results.
Would love to see your guys take on one of the popular 4 cylinders such as B series. Very keen to see how your design ethic would change how they sound.
Very curious
Yup! Facts
THISSSSSSS
I’m going to make one to their specs for my fa20
39K subscribers? REALLY!?!?! Tell all of your gear head friends to checkout this channel. Ojay is a badass. I wish I had a shop like this near me.
OJ, no exhaust sounds in the exhaust video? Come on man, give us the eargasms we all need!
I watched the whole video thinking we was going to get a exhaust sound clip like at end like the Mercedes v12 video 🤦🏾♂️
Come on he wants us to understand what is said so he cant distract us with so wonderfull sounds!
Preach!
Great content. OJ the way you speak clearly, calmly, and confidently, you’re a natural for this platform. We are all lucky to have you and your knowledgeable team.
Thank you so much 🤗
Biggest frustration?
Trying to get long tube headers & exhaust for a naturally aspirated, high revving, VG30DE in a Nissan 300ZX (Z32).
Well done.
Such a classy video, informative and straight to the point, almost a “Exhaust 101” masterclass. Great stuff
Your exhaust work looks amazing 👌😎
I'd trust anything this man says idc who you are or what expert knowledge you have OJ is right period
I picked up an n55 m235i and the previous owner put a v**f race exhaust on with a dinan performance midpipe. The system is lightweight and functional, but i knew that it wasn't meant for me long term and have actively begun searching on how or what I am going to fix/revise this. The tone and drone could have vastly been improved with tuned resonator, taking away that annoyance between 2700 and 3300 rpm. At some point in life, Id love to meet both you and alex from lsc, but more importantly, since im in the midwest as well, sometime have your team guide or build a way better "performance daily driver" exhaust. I love nice exhaust, but theres a difference between purpose volume and just loud and crass. Keep up the good work, hopefully a future client someday.
Jacked Ned Flanders knows what is up. Love it
Would love to see you talk about:
1. Four cylinder exhaust optimization (NA and turbo)
2. Ovalized exhaust tubing for low cars (yea or nay)
Thanks OJ. I’m teaching myself TIG welding mainly to be able to build some wild custom exhaust systems I have buzzing around in my head. I can’t wait to run some beads on my first stainless system.
Great video OJ! Fluid MotorUnion exhausts are works of art in my opinion, keep the content coming! Thanks for taking some time to snap a picture with my father!
Totally agree with vibrant industries resonators They knock out a lot of sound, place them At the rear, Beyond the Magniflow mufflers
Absolutely love the professional way you presented information! You guys seem like an awesome business and I hope you are extremely successful
Great video. Tons of relevant information packed into a relatively short video.
I wanna get this exhaust system been hearing your work 👍 love it
Great content man. Discovered the channel a week ago.
I live in Europe and in a near future thought of ordering an Exhaust from FMU for my GTI. I understand it's not perfect as would be better to have the car in the shop. Unfortunately I can't.
There's a lot of stuff on the market but sounding thin can plus questionable performance when that gets into the dyno.
Very informative content. Thank you for sharing.
My question has always been where to place the mufflers and megaphones throughout the system. How does the position of these change the tone of the exhaust? Is it better to have megaphones at the beginning of the system, in the middle or at the end? How does the length of the megaphones affect the performance and sound? Is it better to have mufflers at the end of the exhaust system or in the middle? It would be great to know that information with the help of your experience. Great video!
Megaphones are really trial and error. We have been able to do a lot of that. There are so many combinations depending on the vehicle's set up, your goals, as well as space constraints.
What they're trying to say is it's a trade secret, and we will never get a straight answer.
I’d love to see you do a video specifically about diesel exhaust systems. I drive a Touareg TDI and there’s a ton of info about exhaust tuning for heavy duty pickups, but not nearly as much out there for European diesel cars.
I just finished my first full stainless with the right welding wire and gas this time. Ugly but functional welds. I had to use pie cuts to find different angles in 3 spot. I found myself using tape to hold them in place then peeled some back to tack. I noticed any angle cut pieces elongates the hole size and doesnt match exactly. Had to cut apart one section after it moved an inch off. Found welding my way back was better. Learnd cheap v bands are trash. Learnd v bands warp and need to be filed flatt. Came out okay. Made my own x pipe out of 45° to keep a low angle and didnt over cut the middle to cause a pinch point.
The ugly butfunctiona got me rolling. If they are ugly I doubt they are functional. On a serious note if you are serious about learning to weld look to any technical college close to you most offer classes for hobbyists.
@HisNameIsTater ugly meaning not perfect dimes. Not 1st timer low amp globs stuck together on the surface. The inside had a weld line where you can see different metal.
OJ, good job. I also have a E39M5 ready to be sent your way for much needed love from you after full engine, transmission, rear diff and suspension rebuild. Just say the world and I’ll send it from the Big apple.
Good luck with the Chanel.
Let us know we look forward to it
Where this is most apparent is the VG30DETT Nissan. I love them, but the exhaust note is awful with an H-pipe and way more smooth and exotic with an X-pipe.
Awesome video, thanks for sharing your experience. This is for real performance enthusiasts.
Honestly a really great vid! Would like to see a video on inline engines (I3, I4, I5, I6). I think those are the hardest to get sounding really great.
Great suggestion!
What do you mean?! Inline 5 cars always sound amazing.
Biggest frustration- paying top dollar for Hooker Aero chamber DUAL 3" in 3" out muffler just to find out it necks down to a SINGLE 2" inside😢
Wow, now that's knowledge about exhaust building.
Man, the amount of trial and error i have gone through to get my new Raptor R to not sound like ass and keep quiet mode after doing longtubes is crazy.
I bet you guys would have done a much better job and got it to sound better. You guys are less than a 3 hour drive from me too.
Another great video. I want to add a megaphone to my Camaro, but it’s obviously tricky and there is no way to know if going megaphone will help with higher pitches and lowering rasp. I think the LT1/LT4 engines will always have some kind of rasp due to the engine design, but reducing it while still still having a strong sound is the goal
Most frustrating things? Trying to configure a cutout pipe system for in the neighborhood and one out of the neighborhood. And probably going to see more info on megaphones, see the german guy on the f1 sound production (because i have a i4 as well as my canadian 4.6 ford). Dont want to spend too much, but want to spend the money right. Etcg1 put a cutout on his car that is remote controlled. And had minimal conplaints. Mainly dampening the rattle that sets on it.
I'm fixing to do a full stainless exhaust on my gen 1 lightning. Custom stepped headers and a couple of your megaphones. I may end up getting some dr.gas boom tubes?
Corsa extreme double X pipe is in my opinion the best sounding out there, which is what I have on my Roush stage3 supercharged car. And it has no drone at all. On my NA 2019 Mustang (wife’s) has the AWE track edition on it. Drones a little and has a deep tone.
The customer had that exact system. Didn’t love it so he went searching. Got magnaflow next, hated that. That’s when he got us involved. Feedback from the last three weeks has been- “it’s the only system that’s done exactly what I wanted when I wanted… take when you cruise, LOUD when you get on it, a classy sound… NO drone!”
More on that coming up in a few weeks
Alex brought me here. I was just researching after market exhaust for the Mustang.
Thanks for the great videos lately.
I actually found this doing research for a GSXR Kei Van swap I'm working on, I'm hoping that I can get it to sound somewhat more exotic like with a proper car style exhaust rather than the classic liter bike sound.
So the 1” per 100 hp rule… hp is linear and pipe diameter to cross section is exponential. So even in your example of 700hp with two 3.5” pipes (thats 19.2 square inches, 2.75 per 100) the rules falls apart because if you used one 7” pipe it would be 38.5 square inches (5.5 per 100hp), about half the exhaust velocity.
Some examples I’m familiar with:
Stock SBC street engine with 300 hp two 2.5” pipes (breaks your rule), thats 3.3 square inches per 100 hp.
Racing SBC with 450 hp uses two 3.5” pipes, 4.3 square inches per 100hp.
Modern Corvette Z06 with 670hp, two 3” pipes. 2.11 inches per 100 hp (reflects average corvette driver).
Based on those I’d say a much better rule of thumb would be 2-3 square inches per 100hp on a street engine. 3-4 square inches on a racing engine. 4-5 square inches on hot race engine.
And your other example.. At 2.75 square inches per 100hp an 1800hp engine should have a single 8” pipe or two 5.5” pipes.
Loving the content OJ! Very informative and well made. Here’s my situation I’d love for you to weigh in on: I have an e46 M3, which is notoriously raspy. I’d love to smooth out the exhaust sound, and deepen the tone if possible. Thoughts?
GT350 sound clip please!!
This viddie struck a chord with me indeed.
I just sent your shop an email on it. 👍
I do believe this would be a new, unique challenge for you all as well.
Solid work as is the standard for FMU.
Only disagreement is the X-pipe recommendation. For any large displacement V-8, true dual, equal length exhaust is the best sound. The rough, guttural roar is the brutal cacophony that makes other engines hide.
New to your channel and very happy to find experts in the field. I will be coming to you guys for my next build. Thankfully not too far away in Ohio LOL. What has been your experience with Venturi pipes? Many years ago, I had a 2007 Mitsubishi eclipse GT with a 3.8 l V6. I built a custom exhaust four times to get it right. Unfortunately it was the year before they switched to a dual exhaust design so an x-pipe wasn't in the cards. In the final build, it was the Venturi pipe that got me over the 300 WHP mark. I was pretty happy getting from 263 BHP to 300 WHP and still being NA. I am glad I stopped there because was starting to follow this wild Russian guy who frankensteined the Evo AWD system into his 4th Gen eclipse and went forced induction. My fabrication skills aren't that good lmao. Neither was the $10K price tab to pull that off.
This knowledge is great! Plus it makes sense if you're lucky enough to have a shop near you to get it done. Around where I live the guys lol at you like your speaking Martian or something.
Great video OJ! Do you have a rule of thumb with regards to how much pinch/overlap of your X-crossover pipe? What's your opinion on merging the two exhaust banks with an expanding midsection, then splitting to the mufflers (elongating the mid section of the x-pipe). Thank you!!!
exotic knowledge...
Get the guys some water based cool shirts. Can be used heated in winter as well. They will thank you.
So what about a vr6? Should I use an x pipe first and then merge into a y pipe or straight into a y pipe like the factory did?
how about a decent 3.5 ecoboost sounding exhaust? Would love to see that from you guys!
I can't wait to dig into my ATS-V. The Borla system is awesome, but the LF4 has notes that remind me of a Porsche, but the Borla doesn't promote it.
I Hope We are Listening People Solid Firm Advice Here As for the Experts Oj is Fully aware and in the Know. I Have worked in various automotive industry Right up to F1 Level. So when i say Oj Knows His Shit ,,I mean it... Legend content from oj & Alex . FMU/LSC Legends ... 😐
I want a quiet and good flowing, i know i have to compromise but i don't think straight through mufflers will make my exhaust quiet enough
So what’s the opinion on ovular cross-sections for pipes? I’ve always figured the flow is roughly the same as long as the internal volume is the same as a circular pipe. The only variation I can think of is bending along the long axis of the oval or the short axis leading to different amounts of air friction. Would love to hear more about this since I’m trying to custom fab a flatter exhaust header by using ovals instead of circles!
absolutely sir! just subbed and liked.
Curious, I have a new catback I installed, the flanges do leak and are known for it. Would it be bad thing to have someone cut and weld so I can change to vband? I have a Greddy Evolution GT for my 370z... very pretty, love the sound....terrrrrrible sealing ability on all flanges.
Show off your work! Let’s hear the mustang with the FMU exhaust por favor 🎉
Hey OJ,
Im curious; is there a rule of thumb that the exhaust should step up in diameter or step down in diameter as you progress from the collector to tailpipe? I'd always grown up hearing the old school train of thought that as the exhaust gasses cool they take up less space so you step down the pipe in size to speed up velocity which kind of made sense at the time but i have recently heard people reccomend stepping up in diameter for optimum performance.
Then there is me...
Putting tri Ys on an F150 bringing the 2.25 pipes to a Y and 3" the rest of the way out. In the meantime, length matching the 2 sections so the pulses aren't stacking in the single section.
Not all of us are doing exhaust in good taste we just want it to taste good.
Another banger of a video. Damn you guys do a great job putting these together. Been following you guys for many years. Would love to connect someday. 🤙
How to measure Drone and eliminate it 🎉🎉 it is the most common problem in nearly all aftermarket systems.
Very informative video... great work!
The titanium thing bus interesting. The Engineering Explained channel tried titanium on his s2000. The sound quality compared to SS wasn't much. He pretty much has the same opinion as you. Just subbed and commenting for algo's.
I used Vibrant for the first time on my current car. After a muffler delete, my gf hated the drone, she had to yell in the car just to talk. I put in a vibrant and now both the car and my gf sound better 👍
Another great video! Thank you for the explanations.
Would love your thoughts on spintech mufflers. They're kinda like chambered mufflers but use perforated spirals instead. Had them on an monaro (gto) with an LS1, dumped at the diff and my god that sounded incredible.
Hype. Used them many times and while they do more than many after market options… it’s not better than a high quality straight through design.
Think of it like… if a spintech sounds that good imagine what using two super-quiets would be…
If there’s a chambered muffler that had a cleaner sound I’d be recommending it.
Can we order these mufflers and Xpipes for the 22Mustang GT like shown?
Fred Armisen never misses 😮💨
opinions on adding valves onto an exhaust, specifically after the cat before the res?
Wish i had the funds to have a set of headers remade in stainless with a better collector 😅
Great content, keep it up!
I'd like to see the percentage difference between your multiple H vs X pipe tests.
I remember seeing one test on engine masters that didnt show a large difference but would be interested to see more info.
Im by no means and expert, but id venture a guess that it has a lot to due with the engine it self i.e. the exhaust valve setup, cam selection, CFM rates, and most likely - intake bottlenecks
We’ve been playing with exhaust development since 2008. A time where we weren’t video’n everything for the tube but lots of content written for our blog you can pour over on our website.
This video is about getting the best power AND sound.
The h pipe can perform similarly depending on the application but never sound as clean, they develop a blatty rasp from the 90’ degree intersections.
Some people like it cause they hear a decent sounding vehicle with an h pipe and they think it’s the h-pipe, not knowing what that that same config would sound like with a proper non-90 x pipe… ON THE SAME EXACT SYSTEM (it would sound cleaner)
Because this particular experience has formed our opinion- It doesn’t make more or less power, it sounds worse, so why use it if we feel it’s never better?
Just started the video, but one thing I have wanted for the longest time is a super quiet free flowing exhaust so I can drive a complete sleeper. I do not care for the “louder is better” exhausts that everyone seems to put on their vehicles. I don’t know of anyone that makes a quiet exhaust that gives max performance.
Ive got an old vr6 12v.
It's never going to be all that quick, but they do sound nice with the right system but I didn't want it loud all the time.
I placed an electric exhaust cutout before the muffler but after the resonator thats further upstream.
It sounds great when it's open,without being too loud and when it's closed nobody looks at you.
The space I have to use is very limited, it's OK for a single but extremely challenging for a dual set up.
OJ is there a good way or best way to do a straight pipe? Not just the content from this video but things that may need to be considered to combat not having a muffler/resonator
I wish I had a real exhaust shop around where I live. I would drive there just to get mine rewelded.... The weld on mine suck....
One question I have is how does changing the shape of a pipe, for example to oval pipe affect performance and sound? Does it have much of an effect or is it just a little more difficult to work with?
What is your view on taking an inline-4 equal exhaust headers and making the headers uneven?
Midway during this video I realize there was a additional option for the custom exhaust. I couldn’t imagine my E39 M5 could sound any better? It is #Epic.
What your thoughts on that upgraded stainless steel you mentioned.
And curious to understand the benefits or downsides to upgrading the intake runners to replicate Gold Wheels engine platform.
My understanding is taking the air from the plenum gives it that Instant throttle response that you just can’t get otherwise.
Thank you for some good information. Liked and subscribed.
‘84 AMC Eagle. All original parts and setup. Already runs quiet even in 4x4. How would adding a second pipe effect performance and sound? Could I make it even quieter without cutting power?
Have you heard of the switch fire X pipe !? by borla do those work?
Nice! I have an 07 Ridgeline and the muffler is getting a rust spot, what muffler would make the V6 sound good without sounding like a fart can?
Fantastic video! I'm local to you guys and have been considering inquiring with you guys about a catback system for my 2014 Cayman S. The current system now sounds great up top but during normal driving drones so bad.
hit us up when you are ready
Hey OJ, love the videos. I have a 2018 Tahoe with 6.2L and a Whipple supercharger with smog legal tune. I want to upgrade exhaust, but seems no one makes an exhaust with bigger than 3” tubing. Would you build me something cat back? You think 3.5” is worth it for 640hp at tie crank?
Thank you
we can build almost anything especially if we have it in house. Hit us up to discuss it more...
@@FluidMotorUnion Ill call you the shop next week. Thanks OJ
Have you done an Equal length exhaust on BMW F8X M3/M4 M2 Comp ?? (S55 engine)
Is there a video of that blue mustang? With 4 vibrants and megaphones, it might be one of the very few s550 cars that actually sound good!
It was soo good we cut out the information on this one and will do a dedicated video to it coming up.
You shouldn't get any "sugaring" inside the pipe if you back purge a MIG weld just like you would a TIG.
What about the NA 2023 Nissan Frontier 3.8 v6? What size I want to use an H & X pipe for dual exhaust. Any advice would help. It's my first v6 to modify.👍
Dual 2.5… anything bigger you’ll be dealing with drone and other unpleasantries that won’t equate to power… also.. don’t use a H pipe if you care about it sounding decent.
I hate the exhaust "clap" I get from my f150. Currently looking for a different set up
Truly great video, and listen a business guy I know your slammed busy, ..with that I am a true 45 yr old enthusiast, looking for some help with different vehicles.. currently audi s5
e-mail us at all@fluidmotorunion.com to set up a consultation with OJ
Subscribed
Have y'all ever worked on an ST205 Celica GT4?
Never had a full exhaust system on my '71 442 w30. Now that I have the proper rear bumper, I want to use my Chrome exhaust tips with a real exhaust system. Thanks for all the great info
I have a 7th gen Toyota Celica. The 2ZZ-GE engine has a 4 to 1 exhaust manifold, but also has a metal separator that protrudes out the manifold to join to the other side of the rest of the exhaust.
I’ve had 2 DC Sports manifolds and in both that metal separator has come off and one even blocked the pipe to the point where it destroyed my cat.
First question, if Toyota from factory has that separator in there, then wouldn’t buying an aftermarket manifold without it (most cheap ones don’t have it) be counter productive? They put it there for a reason and the joining pipe continues that separation.
Second, in an old car like mine, how would I now get a “performance” manifold or would it really matter? I have to now either keep using the DC sport one without the separator, or go back to stock.
I had more questions but I lost my train of thought.
Was hoping in hearing a sound clip of that. I wonder how these megaphones would sound on a 5th gen Camaro through a Corsa Sport Exhaust .
does the inch/100hp principle still check out with diesel vehicles?
What would you recommend for an fj cruiser? Can't do true dual pipes. Haven't found anything that sounds good. Or even headers...
stainless is painless.
you got my sub, i just came here to confirm my beliefs. and they have been confirmed. thanks for your service
Welcome aboard!
You say you don't like the the H pipe because of less power and rasp. I don't disagree on the power aspect but every X-pipe I've heard sounds like it has more rasp and the H-pipe always seems to have a deeper more pleasant sound. Is your X-pipe just different than the others on the market and has less rasp?
I live in the Southwest. My exhaust systems are in some cases many decades old and are perfect. No need for stainless.
Lol, ok pops
@@HisNameIsTater Pops? LOL
any tips for a 06 corolla with cold air intake, even 10 or so horsepower would help.. the take off from a dead stop will almost get you hit by a oncoming car...you dont have much to work with as it is but maybe a little bit of something mite help...thnx
What if you have a civic and a two 90 degree bends? Where along would you place a vibrant resonator to help reduce drone best?