My welding instructor told me to never stand in front of the regulator handle when opening a pressure vessel. Because he was a trade welder for 20 years and he had seen one catastrophically fail blowing the t handle into the wall. He taught every student that came through his course really consise safety rules. Mr Elton you were a master RIP.
Im currently in welding and fab class in my college. One time I seen a kid try to punch a hole in a piece of hardened steel. It fractured and one of the pieces wedged itself in the cinderblock wall. The kid was find but he almost fucking killed himself
I’m 17 , and haven’t had a dad to teach me the basics like this, so I really appreciate you teaching even the little things. Not expecting us to know anything helps so much! Great Video👍🏼
Keep your head up, bro. You'll never regret learning how to work on cars. My grandpa always said, "If I hook you on tools now, you'll never need to be addicted to anything else." He was right.
Don't worry man I started when I was 15 learning mechanic with 4 of my friends. We all bought 5.0 mustang and would be blowing engines left and right. We started to rebuild our engine until we learned. I am now 31 and I have never taken a car to a mechanic for anything. And I do crazy stuff to our cars. I even learn how to paint cars. And yes all of the fluids in my car are like brand new before I replaced them. My brother's get mad at me for switching out the oil when it looks like I just barely put it in.
Wait wait wait. You mean to tell me that you did a test, something didn't go as planned, and rather than just pushing the video out with skewed results like almost every other youtube channel I can think of, you actually put the effort into giving more accurate results? See? This is why I'm still subscribed to you guys. You don't just spam as many videos as you can, letting the youtube algorithm boss you around.
True, without the boost correction with the cat this would've been an inconclusive/unfinished video. When they mimicked the boost it really showed how little a difference the cat delete really made. I wouldn't do it for a measly 5hp increase.
Karen. It's just 5hp. It would be worth it with a full exhaust change because the full power gain can be significant. The combo of better intake and cat-back exhaust will give largely noticeable performance gains because the engine with respirate better.
@2D well they did switch back and forth relatively easy. Its not impossible to see you deleting the cat on race day and slapping it back on afterwards. 5 has isn't much until you're pit against a car that has more or less the same hp as yours.
@2D exactly my point. Sometimes you have to come to a compromise. If you track your car daily. Keep your straight pipe on and don't daily drive it. If you track it once every now and again, and your grease your knucks like you wash your hands, deleting your cat on track day shouldn't be a huge deal.
@@KitKitChanIsaac maybe where you come from. Federal laws in America can be changed and do regularly. Also they are usually shit and only for someone to make money within the government. It’s my car I have every right to replace my catalytic converter. I’ll cut it out as many times as I want to. Most states don’t even enforce it because they know it’s bs and people should be allowed to fix their cars. In California; good luck!
I like how Zach teaches. He knows how to get information across, including some pretty niche stuff without sounding superior. It's a legitimate skill that not a lot of people have such fluency with. But Zach is just a super charismatic dude, so it's not surprising that he teaches so well.
Scripts? Was the absolute nonsense about a rear window shattering because of welding with a battery connected scripted? I hope so or this guy is a simpleton.
The fact y’all went for the extra data is why you’re such a clutch channel. You checking yourselves and never have an agenda (other than a good time and education)!
I mean, yeah, but this was a terrible choice of car for this test. The exhaust restriction on such a small engine is really negligible. it matters for more for larger or more powerful engines, where a cat delete is definitely worth it for more power, and that’s not even talking about the safety of reducing egts and back pressure. The cats on new cars are very restrictive to meet tightening emissions regulations (and ridiculously expensive), at the oem I work for we are having trouble even meeting last year’s power and torque ratings on the same engines.
If I remember correctly, he did auto shop in school at a local college or something so he knows a lot of the actual mechanics behind why/how things work, but as I can tell you from experience, many of these things are things you actually just pick up along the way the more you work on cars. Zach just has the added benefit of an actual formal education and the backing of a solid car enthusiast set of friends that can all supplement his skills/knowledge. I’ll tell you right now, the biggest help/advantage you can get when getting into workin on your own cars is to surround yourself with friends that also work on their own cars. Everyone specializes in something and everyone learns form the others. It’s great.
Read between the lines "test pipe". Think of how easily they were able to swap that pipe back and forth for different results. The cat could be called the real test pipe because thats one you will need in for the emissions test 😄
fun fact: in canada we just yeeted all the emissions testing equipment into the scrapyard in 2018 i can order a black smoke belching ural truck, which i intend on doing, and there is no worrying about emmissions anymore :v
Even just going from regular to hi flow cats, was by far the best bolt on mod I did power wise. The only mod where I legitimately felt a noticeable gain, and that was just swapping to hi flow cats.
The thing is: most modern vehicles are already equipped with high efficiency, high flow, high performance catalysts, from factory. The "upgrade effect" happens because a cat/exhaust was clogged, and because the pre/post-cat O² readings finally triggered the emissions system to allow full power and full fuel usage, where it was previously restricting fuel trims to control emissions.
Came here to see if cat delete is worth it, came out with a degree in welding, math bachelor, now i know the best type of tools for this job and why the catalics are worth so damn much, amazing lmfao
@@masonchewning9640I think he's fine but he doesn't have gloves and the reason to wear a jacket is so that the sparks dont catch your clothes on fire. I think he's fine anyways
addition to the welding tutorial: wear gloves. the light generated is like a more concentrated version of sunlight. it can burn you. have proper ventilation on coated metals. especially galvanized. other wise a great beginner tutorial. you can absolutely do what zack did with a $200 flux core 110v mig welder from harbor freight jsut by watching this video.
@@Lofi.z34 i'm not endorsing the crappy tool imports. lol. you certainly get what you pay for. but i'd hate for any one to feel like they couldn't do this with their own hands just because they don't have a fancy miller touch screen gas fed welder.
@@Lofi.z34 I used a the harbor freight titanium Mig welder for the last two years before the gun died on me and I upgraded to a Miller. Don’t let internet hype get to you, harbor freight welders aren’t that bad at all. I started my welding buisness with mine. Well worth the $400
@@ChrisSadowski I got the Vulcan omnipro 220. Love it, honestly I use a lot of stuff from harbor freight, and I like alot of it. It's cheap, sure it's Chinese imported, but it works and that's all I care about.
Late to the video, but as a technician, kudos to Zach for not only knowing his shit well, but for explaining it like a high school shop teacher. I say that because while we all love cars, not everyone knows the mechanical side of it all, and Zach does it in a way anyone can understand. Good job Zach! 👏
@@therapgame1091 I think it was mentioned that Zach was actually a mechanic, which definitely helps. As a mechanic/tech myself he's been bang on with everything he says, so I definitely would believe it. There's definitely a big difference between a mechanic who can do the work, and one who can explain it in a way that all can understand. Definitely helps when you're talking to customers, especially customers who don't know how their vehicles work. I'd hire Zach in a heartbeat for just that reason
@@thenerfherder9586 yeah he did. He did product research and development with ecs. And also a legitimate auto mechanic with a formal education in it. He knows his stuff
I think my kids are older than he is. My older brother doesn't know much about cars, the one after me is not too far behind where I am. Zach can explain things to noobs quite well. I like him.
I'm still relatively new to Donut and enjoying their videos greatly. I echo what others say, who have likely followed Donut for longer than I have - Zach is great at presenting and explains things so well. Great vidya!
Welding is one of those tasks that seems really intimidating until you actually start to learn to do it. For builders it opens up a whole new world once you take the time to figure it out. Your welds dont even have to be pretty, just strong.
You speak the truth. I practiced for a few months with my first MIG welder and it really let's you graduate from bolting things together to legit building things yourself once you get the hang of it. Opens all kinds of doors as far as custom work.
A lot of off-roader people I talk to say that starting by fabricating bumpers and rock sliders and such that don't need to be pretty, just functional, is a great place to start. And your first few will look ugly and you will be self motivated to get better at it lol
Yes that’s very much true. I’m a welding student, currently working on my highschool endorsement. And yeah, when you look at welding, it seems harder than it actually is. The terms, and machines you use is quite different than your average mechanic’s work shop. When you make a weld, it’s true that you really need to make sure the weld is strong. I’ve met plenty of welders that thought the welds had to look good too, and then took a grinder to said weld. They completely ruined a perfectly strong weld, because of a simple misunderstanding. The main thing to worry about is making it strong, but it’s ok can make it look good with a strong weld too. But it takes quite a bit more skill, than just grazing over learning welding basics.
Grinder and paint make me the welder I ain’t jk don’t take my advice but true to an extent if your welding for real on the big time weld inspection will hit you if your weld isn’t right ... worm tracks penetration there is more to it the farther you get involved with it but mig is good for any diy junk these days tig and stick are where the moneys at
TBH Welds almost never look pretty, that is why a grinder and paint is a welder's best friend as it will get rid of the ugly and make them welds look niiiiice. I learned Mig and Tig, and I prefer Tig as it makes much less of a mess, but Mig is so much faster and easier lol.
The law doesn't grant people the right to remove emissions control equipment "for track days". People aren't allowed to remove/modify emissions control equipment on street cars. Period. This is literally an example of why the EPA has opted to crack down on this stuff... let the registration lapse, pull the plate off, transport it on a trailer then it's fair game.
@@BTrain-is8ch yep, and honestly it's getting annoying, ever since the EPA has started raiding people RUclipsrs have been saying "Cat delete" far more often. When in reality they need to just stfu, everyone and their mom who knows anything about cars knows getting rid of the cat increases power, especially in turbo cars.
@@BTrain-is8ch In my state, you are not allowed to have an Unregistered Vechile, Period. Doesnt matter if its Offroad/Track only, has to be registered and have plates, even if it doesnt run. The EPA also didnt "Crack Down" they have been raiding and shit since the 80s, the news is making it out like this is some new thing, its not. The EPA doesnt want you to have a Race Car, they dont want the NRHA, they dont want Nascar, they want everyone in Teslas and Prius's. The fact we still have them still, is a testament of those fighting the never ending battle. They also dont take into account that the Electricity needed to power everyone with electric cars, would cause more issues than the Gas cars do now. They have unfeasible Ideas, and logic based on Fear and not data. That is unless, everyone went to Solar/Wind power to power all the Cars, because that just worked so well for Texas.
@@GOTTHEFUZZ Again they didnt just start Raiding people, they been Raiding people since the 80s. Its just that time of the year, and thanks to Covid they got less to do in office and more time to raid people. Plus they have Biden riling them up, pushing them to enforce more, to make up for the 4yrs that trump made them chill out. Thats why they are trying for the RPM laws, not because they didnt want to before, it was because they never had a perfect storm, of a Pres, House and Senate, Electric cars, to actually pull it off till now. Our Moron Govt, basically just banned Vaping, even with the Facts showing its a Harm Reduction, and every other country embracing it. We got morons in power, thats simply all it is.
@@cyberlocc I know nothing has changed. I know the EPA does this periodically. I've watched a few rounds of it and seen the RPM act come up each time. The EPA is in fact cracking down on it right now because they are actively going after brands/companies that sell/install/etc parts marked "for off road/closed course use only" that end up on street vehicles. I'm aware that there's no new law and the stuff they are dealing with has been illegal for decades. Anyway, the EPA doesn't care about legitimate race vehicles because they are so rare as to be irrelevant. P.S. Natural gas powered plants made up around half of the generation outage in Texas.
Also dumbing it down to anyone can understand and explain the basics in a very understandable way is very impressive, I only say this is because I had a stroke a couple years ago and I don't understand directions very well but this I can understand. Kudos!
That amount is perfect. Still grippy and not too much but a hell a lot of fun. 500bhp is silly, where can you actually put that down. The Miata is about going down fast country lanes, not highway
God man. Zach is like the dad I see teaching their kids about cars. I had my dad but he wasn't a car guy. He fixes what he knows but that's it. So it's cool having such a great person like him teaching me
Dont give up! I'm the only gear head I'm my family and no one ever taught me anything, but I know alot of stuff now so dont give up and keep learning 😄
basically yeah I'm British too people just drive ride looking for s target unless you have a garage or secure drive way but nobody people have garages in this country since are houses are tiny whilst American houses average double the size and they usually have a garage or actual drive way Most people in this country have to park on the street infront of their house but it's not your property or private but a public road and If a football match is going on and you live near a stadium well good luck If you haven't already parked your car
It is worth it for older cars that need ZDDP added to the oil. It is said it will probably clog up catalytic converters. But old flat tappet engines really do need the zinc.
As someone who works for a high end welding company I would like to make one tiny correction, you don't necessarily need co2 to weld. You can lay down some pretty nice beads with just argon. However Co2 mixes are used in certain situations such as welding carbon steel or doing a carbon build up. Nitrogen can also be used for specific purposes as well. Love the Vid Zack.
Co2 is used to increase general hear input also changes the profile of the weld (tooth shaped penetration). That’s why co2 is required for most applications
This is why I'm here. Not a car guy (live in Manhattan, don't even own one)... I found Donut based on the Tool Party episode about rust removal, stuck around because Zach, Jeremiah, and Justin were super entertaining in that episode. Literally the first few days I found y'all, the Tool Party eps were the ones I watched first because I just found your approach interesting. Now I'm working my way through Money Pit and Zach's hands down one of my favorite RUclips presenters at this point, and now I just accidentally got a welding tutorial because why the hell not.
It would be really interesting to see the stock cat compared to a high-flow aftermarket one. And then compare that to the test pipe after you fix the boost creep issue.
I believe StreetFX from Australia did a car vs no cat vs hi-flow on their 800~ HP Supra. Cat delete added fuck all power. Not worth a 10k fine down under. Smells like shit as well.
@Shndon430 Hurtado high flow cats are designed to have a negligible impact on flow compared to a straight pipe. Much higher flow than normal cats, which themselves typically flow better than mufflers.
@@Phymatic There is not a Cat in existence that can handle 800HP engine, so that doesnt add up. The highest HP cat you can get is 700 for a kooks green. After that, you will melt them constantly, they have to be removed pushing past that point. Lots of people have even fried kooks at 700hp.
@2D Link? Also a Link to that being proven. Because that would be the first I have ever heard of that. Unless you talking about those Vibrant GESI, because I can already tell you, those don't even handle as much as Kook greens, that's marketing not Reality. Thats why the Vernon's have like 6 cats lol.
@@cyberlocc I'd have to find the video as it's been a few years since I've watched it. Their Supra was not running a cat to begin with but they added one for the video to see the real world difference. IIRC they lost like 6 WHP from adding it. I kind of recall them being high 700 WHP maybe just over 800.
Honestly dude... most realistic and positive overview of MIG I've seen on YT. Most are either explaining it like freaking theoretical physics whilst others are "Bubba" using his gas station sunnys and no top on 🤣 Loving your Donut content 👌
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Simple question. What about the 02 sensors and computer? I assume Deleting the cat will throw o2 codes which the computer will respond to by changing air fuel ratio. Most likely creating less than optimal running conditions.
What Zach tells me to do: buy thousands of dollars worth of tools and weld together a pipe What I do: $40 angle grinder, some pipe, and a few exhaust clamps
It'd be cool to see a test with a high flow cat too, compared to the NA miata OE cat. Though there's probably dyno charts out there already for those, I didn't see any when I was briefly looking around.
I have been welding and building Hotrod since the 1970s and tend to be judgmental but I absolutely love your style of explaining things you do it very well.
And that is why, other than my phone, I will never have a smart device in my house. Hell, started leaving my phone at home too. If you have covid, they'll use it to track you.. !
true, but we could have seen a lot less of the fab process. at most, this video should have 5 min long and was disappointed to see this done on a turbo car, i want to see the gains on an naturally aspirated car.
This video is an absolute life saver! I've been looking for a place over here to set me up with a decat but so far no luck. Thanks to this video I can make my own. I've watched loads of donut media videos but none with this dude really informative stuff, so thanks!
Reminds me of when a guy came into my work and wanted to put a motorcycle battery into his Civic, for weight issues. I told him if he's that worried about saving a couple pounds try a diet.
Like the time a guy came to a maxwell spot and asked if they had anything to drink with low no sugar cause he has diabetes I murmured under my breath yeah they got water.
@@ThatGuyFromThatOneApp In my book it would be the other way around, if u wanna free the engine souund u shouldnt hurt the enviroment by deleting the cat lol.
Yeah I think alot of people would like this video but on a NA vehicle to see if it makes a difference with our normal cars, maybe even do a muffler delete vs mufflers and cat vs no cats on NA
Got a 96 mustang gt. Flomaster mufflers and off road h pipe. Those 6 cats weighed 200 pounds. I don’t know about power but sounds awesome and better mpg
The cat delete making big power gains comes from the early pellet type cats that were much, much more restrictive than the modern honeycomb type cats. Try this experiment with an old Dodge turbo from the '80s and you will understand why the cat delete trend started.
the cats on new camaros and corvettes are almost NEVER ever deleted in any performance application because they are designed so well there is simply no reason to delete them.
@everyday tenor It being street legal depends on where you live. If there's no emissions testing which is far more common than people seem to realize then it's worth it if you have the coin.
It's so nice having James and the fun he brings and guys like Zach with the clear and concise info he provides. Nolan is like the every day guy we all are. The whole Donut team is awesome.
You guys are life saver been watching some of your turbo videos for the miata and leanered alot been trying to find a turbo for my 2018 civic it's a 2.0 6speed. It's been really hard to find the right one since I didn't know to much.
@@spencerfalzy that'd be a hilarious animation. Like the shitty car games. Have a shitty 2d image of jobe with his arms crossed and grime on his face sliding into frame saying "hey kid you don't got enough cred for all them hrsprs"
considering the upstream backpressure of any turbocharged configuration, the catalytic converter may not play as big of a role in choking the exhaust when compared to a naturally aspirated engine, i think a smog era v8 with cats vs test pipes would be an interesting comparison
@@howieewalt1322 that would be a great engine to test, even better would be the equivalent year with that same engine as it was configured in the mustang gt and equipped with a whopping 6 catalytic converters, 3 per engine bank, the most i've seen on a passenger car
@@howieewalt1322 you started having higher flow cats by the 90s, you'll get a gain but probably not as much as you would in the real smog days. A good candidate would be a Mustang II king Cobra which was 5.0 making 149 HP.
I did a 2012 sierra cat delete with headers and my mechanic drove it after my trans was replaced and was totally surprised between the difference of our trucks. He also had a 2012 with the same motor. I felt a little difference honestly. nothing significant tho.
I'm not so sure. I may be mistaken, but I think it plays a bigger role in turbos. An Engine Masters episode tested exhaust flow in turbo and NA applications. IF I remember correctly, better flowing exhaust (post turbo or post headers in the NA's case) were more important in turbo cars. In my limited experience, the older catalytic converters did more to choke exhaust flow and power, but even then not as much as people expected. People greatly exaggerated the amount of horsepower catalytic converters lowered. The bulk of this belief was perpetuated by old school muscle cars fans who saw power drastically reduced with emissions. What never gets considered is that this also coincided with a move to measuring an engine's net horsepower vs its gross power. Net horsepower is usually 20% less or more. Then with the move away from leaded gasoline, compression ratios were usually lowered by around 2 points to account for lower octane fuel and prevent detonation. This part actually CAN be blamed on the catalytic converters as leaded gasoline can't be used in cars with cats and the phasing out of leaded gasoline was expedited. However, i believe toxic leaded gas would have been phased out even without the invention of catalytic converters. I've traveled in countries 30 years ago that still had many leaded gas cars on the road. It's an unpleasant smell in congested cities. As far as modern cats go, I've seen a few tests done on NA LS engines and the increase was usually around 3 horsepower. These engines were usually around the 400 rear wheel horsepower mark. I decided to go with high flow cats on my header setup because of the noise and smell that catless systems create. It's surprising how much "rasp" catalytic converters cut down and how awful exhaust smells without cats. The only two reasons I was hesitant to put catalytic converters was the 150 dollar price increase and the small possibility of cats aging and clogging in the future. Of course, at that point, I'm just going to hollow them out. The 5 horsepower I MAY have lost (most likely less) was not a factor at all for me.
i have watched money pit many times as i love zachs hosting and just easy understanding, this video in that short bit of weilding i learnt more than 3 months at college, out teacher didnt explain as well as zach did.
Would be interesting to test a high flow cat vs stock vs test pipe. The very small gain is exactly what I expected for the level of build, even with the turbo the cat is barely restricting flow. Cats don't really start to become a restriction until you start trying to produce big power and you can usually size up the cat or run high flow cats if you're trying to make big power and stay legal.
@@C6Z_Bob A better argument is the fact that the overwhelming majority of people who claim to care about the environment buy 90% of their stuff made in China when China is the #1 polluting country in the entire world across all categories including: -CO2 emmisions -plastic waste pollution -chemical pollution of rivers and lakes -general waste pollution of rivers and lakes -industrial waste pollution -smog and smoke pollution -chemical vapor pollution -hazardous chemical pollution But no. They keep buying products made in China while claiming they "care" about the environment. Sounds fairly hypocritical if you ask me.
One tip about the band saw... If you keep your guide wheels as close to the material as you can, you reduce the blades penchance to wander while in the cut and should produce straighter cuts. Abviously as you mentioned, the cheaper the saw the worse the cut quality, but this should help get it as good as it can be!
Why does that make me weird? He has nice eyes. Do you feel better about yourself for getting that off your chest? Do you think you are funny being an asshole for everyone to see? “Hey everyone look at me I called him a weirdo because I’m insecure of with my sexuality” Ass hat!
as someone who has been certified in welding through school and works for a welding company i can say u worded and explained everything perfectly when it comes to helping someone to understand the basics of welding
No MIG is fine. Why bother with the additional headache with TIG. It's a test pipe, it's not hold pressure, not holding any weight, nor does it need to pass any AWS or any other wps protocol/inspection. No one is going to see it or really give a shit what it looks like in the end.
@@fyreleya3005 I'm not saying MIG isn't fine I'm saying TIG is always preferable when you're looking for a solid non porous seam with deep penetration.
@@trevorreid9142 they go after people that make videos about removing factory exhaust and putting aftermarket so jts not smart to do this at this point of time
Someone who is not an idiot nor treats viewers like idiots is a refreshing change. Unlike most Netizens I don't think I know everything, so this educated me a little in something I needed to know.
What a dude bro. He wrote his results on a piece of cardboard he tore off of a box by hand. No fruity white board with colored markers. I love how informal this show is.
My next door neighbor claims he did a "cat delete" on his 1996 Oldsmobile... and by that I mean I'm pretty sure he just cut the exhaust before the cat and left it that way. Sounds like a nascar stock car and he goes to work at 6AM... I'm not too fond of it.
I'd like to see a high-flow cat tested ad well. It'd be cool to see stock, high-flow and catless with a comparison of power and also emissions. Measure ALL the data!! :D
@@benb5308 Well for starters any that wants a road legal car that will pass a legally mandated vehicle inspection where a missing catalytic converter is an instant fail. I know this is a strange concept for Americans.
@@BigUriel yeah pretty much any Americans other than those in Canada. Mandatory vehicle inspections are bullshit and I'd refuse to live anywhere that has them. If your lawmakers are dumb enough to think vehicles are a large factor in co2 pollution than car inspections are probably the least of your worries
For me it's because I still want a little back pressure so I don't strain the header mainly because I've been there. Also I don't like to have more volume than tone. Just want that tad bit of extra power when I swap the exhaust system out
I’ve seen this done one other time. Back in 1981 one of the popular performance magazines got to test the 1981 Pontiac Trans Am with the turbo 4.9 V8. They were allowed to test pipe it while they had it and on the chassis dyno pull it made exactly an extra 100 horsepower without the cat.
Awesome job, love the way this was very informative. I would love to see an NA version of this test, 1 as confirmation between the types of power production, and 2 to help identify the importance of backpressure in NA vs Turbo in the exhaust piping
Wow I really appreciate your talk throughs on the welding bit. I've found myself with a "weld bug" and have been actively working on learning the basics before ever actually getting a welding gun in my hands. Thanks!
To each their own so dont attack my opinion, unless you just want to...be my guest. Money pit is in my top 4 or 5 donut media stuff including past gas, but I find any donut episode with Zach extremely hard for me to watch. It's str8 up boggling for me to like the money pit as a guy that doesnt know how to work on cars but be so annoyed with the host. Honestly dont like anything about his vibe. Jeremiah and james are my favorites and the rest of the crew is cool , but zach just rubs me the wrong way. I'll keep watching money pit nonetheless
Where I’m from, a test pipe is when you just completely get rid of the pipe without replacing it. And a straight pipe is whenever you replace the cut out section with an actual straight pipe
Part of the reason for a test pipe is it increases boost lower in the rpm range which creates more power and better response. And part of the reason for " bolting " on 30 hp with a simple test pipe is it facilitates more boost.
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As many other people have said, hiring Zach was one of the best decisions Donut has made.
Yeah, it's nice to just get information without all the dumb shit James does. I don't need someone crying over little shit in car videos.
Every single video of his has this exact comment LOL
@@TheoneandonlyJobis shut
@@TheoneandonlyJobis yes but james makes the up to speeds interesting with the little jokes here and there
Agrees
Prius drivers usually don't even get to choose if they want to delete their cats, it just magically happens for them
That’s true and they also have a house full of cats so if they missed one they’d probably never notice.
Like effspot
@@njshift lmao
can relate
😂
My welding instructor told me to never stand in front of the regulator handle when opening a pressure vessel. Because he was a trade welder for 20 years and he had seen one catastrophically fail blowing the t handle into the wall. He taught every student that came through his course really consise safety rules. Mr Elton you were a master RIP.
I wanna know what a t handle is so I can make sure to not do the same thing
@@stinkymans5002 it's the thing you turn on the regulator to change the pressure
@The Weapon Collection combination lol
@The Weapon Collection theyve all seen some shit i swear
Im currently in welding and fab class in my college. One time I seen a kid try to punch a hole in a piece of hardened steel. It fractured and one of the pieces wedged itself in the cinderblock wall. The kid was find but he almost fucking killed himself
I’m 17 , and haven’t had a dad to teach me the basics like this, so I really appreciate you teaching even the little things. Not expecting us to know anything helps so much! Great Video👍🏼
Keep your head up, bro. You'll never regret learning how to work on cars. My grandpa always said, "If I hook you on tools now, you'll never need to be addicted to anything else." He was right.
Well we’re your E-dads so ask away if you have questions 😎
Not all dads know about cars
Your Dad is a bitch. You are awesome!
Never give up learning,knowledge 💪 💯.
Plenty of dudes/gals up in here to help you out.
Don't worry man I started when I was 15 learning mechanic with 4 of my friends. We all bought 5.0 mustang and would be blowing engines left and right. We started to rebuild our engine until we learned. I am now 31 and I have never taken a car to a mechanic for anything. And I do crazy stuff to our cars. I even learn how to paint cars. And yes all of the fluids in my car are like brand new before I replaced them. My brother's get mad at me for switching out the oil when it looks like I just barely put it in.
Wait wait wait. You mean to tell me that you did a test, something didn't go as planned, and rather than just pushing the video out with skewed results like almost every other youtube channel I can think of, you actually put the effort into giving more accurate results? See? This is why I'm still subscribed to you guys. You don't just spam as many videos as you can, letting the youtube algorithm boss you around.
True, without the boost correction with the cat this would've been an inconclusive/unfinished video. When they mimicked the boost it really showed how little a difference the cat delete really made. I wouldn't do it for a measly 5hp increase.
Karen. It's just 5hp. It would be worth it with a full exhaust change because the full power gain can be significant. The combo of better intake and cat-back exhaust will give largely noticeable performance gains because the engine with respirate better.
@2D well they did switch back and forth relatively easy. Its not impossible to see you deleting the cat on race day and slapping it back on afterwards. 5 has isn't much until you're pit against a car that has more or less the same hp as yours.
@2D exactly my point. Sometimes you have to come to a compromise. If you track your car daily. Keep your straight pipe on and don't daily drive it. If you track it once every now and again, and your grease your knucks like you wash your hands, deleting your cat on track day shouldn't be a huge deal.
delete the cat i will dele the whole exhaust system
Zach Jobe is one of the most charismatic hosts Donut has ever had, an absolutely fantastic addition to the team!
He honestly is the only reason I stayed subbed to donut media
Fr man
I like Zach, but I miss Bart from science garage :(
BART
How much did he pay u to write this?
"Is a cat delete worth it?"
The law requires that I answer "no".
The law is the law and we can't change it
@@KitKitChanIsaac pretty easy to change actually. It's been changing since the first laws were made
69th like...nice 😎👌
I understood that reference. 😉
@@KitKitChanIsaac maybe where you come from. Federal laws in America can be changed and do regularly. Also they are usually shit and only for someone to make money within the government. It’s my car I have every right to replace my catalytic converter. I’ll cut it out as many times as I want to. Most states don’t even enforce it because they know it’s bs and people should be allowed to fix their cars. In California; good luck!
I like how Zach teaches. He knows how to get information across, including some pretty niche stuff without sounding superior. It's a legitimate skill that not a lot of people have such fluency with. But Zach is just a super charismatic dude, so it's not surprising that he teaches so well.
scripts
Scripts? Was the absolute nonsense about a rear window shattering because of welding with a battery connected scripted? I hope so or this guy is a simpleton.
The fact y’all went for the extra data is why you’re such a clutch channel. You checking yourselves and never have an agenda (other than a good time and education)!
Truly one of the best parts about it, so much more knowledgeable commenters would have brought it up
I mean, yeah, but this was a terrible choice of car for this test. The exhaust restriction on such a small engine is really negligible. it matters for more for larger or more powerful engines, where a cat delete is definitely worth it for more power, and that’s not even talking about the safety of reducing egts and back pressure. The cats on new cars are very restrictive to meet tightening emissions regulations (and ridiculously expensive), at the oem I work for we are having trouble even meeting last year’s power and torque ratings on the same engines.
@@jamesd2863 well said.
I cannot believe just how much Zack knows about everything
Always seriously impressive watching him work
He did know to put coolant on that blade while it was cutting.
He has a whole crew that writes for him....
@@zachorvik8361 that may be true but it’s still just him getting the work done
He knows the importance of doing the research before hand. He also took the time to invest and learn a core set of skills.
If I remember correctly, he did auto shop in school at a local college or something so he knows a lot of the actual mechanics behind why/how things work, but as I can tell you from experience, many of these things are things you actually just pick up along the way the more you work on cars. Zach just has the added benefit of an actual formal education and the backing of a solid car enthusiast set of friends that can all supplement his skills/knowledge. I’ll tell you right now, the biggest help/advantage you can get when getting into workin on your own cars is to surround yourself with friends that also work on their own cars. Everyone specializes in something and everyone learns form the others. It’s great.
EPA: Cracks down on companies for deleting emissions equipment even on racecars.
Donut: Here's a video of us deleting a cat.
I didnt know racecars on racetracts had to comply to emmisions on private property
Read between the lines "test pipe". Think of how easily they were able to swap that pipe back and forth for different results. The cat could be called the real test pipe because thats one you will need in for the emissions test 😄
@@ghostwarhammer007 if I don't need a license / license plate on private property I def dont need to comply with emissions
fun fact: in canada we just yeeted all the emissions testing equipment into the scrapyard in 2018
i can order a black smoke belching ural truck, which i intend on doing, and there is no worrying about emmissions anymore :v
@@ghostwarhammer007 farm tractors have to these days.
Even just going from regular to hi flow cats, was by far the best bolt on mod I did power wise. The only mod where I legitimately felt a noticeable gain, and that was just swapping to hi flow cats.
What year and model?
The thing is: most modern vehicles are already equipped with high efficiency, high flow, high performance catalysts, from factory. The "upgrade effect" happens because a cat/exhaust was clogged, and because the pre/post-cat O² readings finally triggered the emissions system to allow full power and full fuel usage, where it was previously restricting fuel trims to control emissions.
I have a feeling that Zach knows the most about cars, at least physically, than anyone else at Donut.
I dont think that was ever in question he has a lot more past experience than the others
He was part of/or head of the r&d department at an aftermarket parts company before working at donut.
@F*СК MЕ - СНЕCK МY РR0FILЕ go away
He used to work for ECS tuning check their RUclips
Or really good at delivering a mutually collaborated script... just sayin...
Came here to see if cat delete is worth it, came out with a degree in welding, math bachelor, now i know the best type of tools for this job and why the catalics are worth so damn much, amazing lmfao
I was actually annoyed by it 🤣
I was like is this a welding lesson 😑
Yet you didn’t learn how to spell “catalytic” correctly. Smh
LOLLL
@@bigwheel9132 English lesson is in the next video
@@colinkeaney559 And the correct way to spell “catalytic” is plastered all over this video. Sorry for calling dumb, dumb.
When he said “we got a welder” he was both excited and sure he was gonna get judged on his welds 😂😂
@@LachlanD1213 what lack of safety
@@masonchewning9640 I thinks he's talking about gloves and jacket
@@alexj.5207 he has gloves on doesn’t really need a jacket for mig in that open of an area for that short amount of time
@@masonchewning9640I think he's fine but he doesn't have gloves and the reason to wear a jacket is so that the sparks dont catch your clothes on fire. I think he's fine anyways
😂
Zach is by far my favourite Donut host. He just seems so at home with all things internal combustion.
addition to the welding tutorial:
wear gloves. the light generated is like a more concentrated version of sunlight. it can burn you.
have proper ventilation on coated metals. especially galvanized.
other wise a great beginner tutorial. you can absolutely do what zack did with a $200 flux core 110v mig welder from harbor freight jsut by watching this video.
Harbor Freight products are a danger to humans
@@Lofi.z34 i'm not endorsing the crappy tool imports. lol. you certainly get what you pay for.
but i'd hate for any one to feel like they couldn't do this with their own hands just because they don't have a fancy miller touch screen gas fed welder.
@@Lofi.z34 I used a the harbor freight titanium Mig welder for the last two years before the gun died on me and I upgraded to a Miller. Don’t let internet hype get to you, harbor freight welders aren’t that bad at all. I started my welding buisness with mine. Well worth the $400
@@ChrisSadowski I got the Vulcan omnipro 220. Love it, honestly I use a lot of stuff from harbor freight, and I like alot of it. It's cheap, sure it's Chinese imported, but it works and that's all I care about.
@@Lofi.z34 yeah more like hazard freight
Late to the video, but as a technician, kudos to Zach for not only knowing his shit well, but for explaining it like a high school shop teacher. I say that because while we all love cars, not everyone knows the mechanical side of it all, and Zach does it in a way anyone can understand. Good job Zach! 👏
Yup, I am not a car person at all, and its nice to be able to still follow him along (mostly) with listening to him.
most of his knowledge is just a lot of research and experience. I could even say it is mostly scripted but I think he does know what he's doing.
@@therapgame1091 I think it was mentioned that Zach was actually a mechanic, which definitely helps. As a mechanic/tech myself he's been bang on with everything he says, so I definitely would believe it. There's definitely a big difference between a mechanic who can do the work, and one who can explain it in a way that all can understand. Definitely helps when you're talking to customers, especially customers who don't know how their vehicles work. I'd hire Zach in a heartbeat for just that reason
@@dhag72 I’m pretty sure that he’s mentioned that he used to work for ECS Tuning, though I could be wrong
@@thenerfherder9586 yeah he did. He did product research and development with ecs. And also a legitimate auto mechanic with a formal education in it. He knows his stuff
Zach is that cool big brother who everybody wishes they had cuz they explain things to you instead of yelling at you cuz you don’t know it😂
Zach was my big brother's name. That being said, this Zach is probably cooler than my brother was...
Well said
I think my kids are older than he is. My older brother doesn't know much about cars, the one after me is not too far behind where I am. Zach can explain things to noobs quite well. I like him.
And Bart took that personally. (Lol just jokes Bart took me to this channel basically)
@@frankielight2696 same
I'm still relatively new to Donut and enjoying their videos greatly. I echo what others say, who have likely followed Donut for longer than I have - Zach is great at presenting and explains things so well. Great vidya!
Welding is one of those tasks that seems really intimidating until you actually start to learn to do it. For builders it opens up a whole new world once you take the time to figure it out. Your welds dont even have to be pretty, just strong.
You speak the truth. I practiced for a few months with my first MIG welder and it really let's you graduate from bolting things together to legit building things yourself once you get the hang of it. Opens all kinds of doors as far as custom work.
A lot of off-roader people I talk to say that starting by fabricating bumpers and rock sliders and such that don't need to be pretty, just functional, is a great place to start. And your first few will look ugly and you will be self motivated to get better at it lol
Yes that’s very much true. I’m a welding student, currently working on my highschool endorsement. And yeah, when you look at welding, it seems harder than it actually is. The terms, and machines you use is quite different than your average mechanic’s work shop. When you make a weld, it’s true that you really need to make sure the weld is strong. I’ve met plenty of welders that thought the welds had to look good too, and then took a grinder to said weld. They completely ruined a perfectly strong weld, because of a simple misunderstanding. The main thing to worry about is making it strong, but it’s ok can make it look good with a strong weld too. But it takes quite a bit more skill, than just grazing over learning welding basics.
Grinder and paint make me the welder I ain’t jk don’t take my advice but true to an extent if your welding for real on the big time weld inspection will hit you if your weld isn’t right ... worm tracks penetration there is more to it the farther you get involved with it but mig is good for any diy junk these days tig and stick are where the moneys at
TBH Welds almost never look pretty, that is why a grinder and paint is a welder's best friend as it will get rid of the ugly and make them welds look niiiiice. I learned Mig and Tig, and I prefer Tig as it makes much less of a mess, but Mig is so much faster and easier lol.
"I should probably put this cable over my shoulder"
- proceeds to weld with the cable not over his shoulder.
LOL
Wrapping yourself with the cable is something you should never do because of strong magnetic field it produces. So that was a bad advice anyway...
I’m glad the disclaimer was there, otherwise the EPA was bouta mulch this channel.
The law doesn't grant people the right to remove emissions control equipment "for track days". People aren't allowed to remove/modify emissions control equipment on street cars. Period. This is literally an example of why the EPA has opted to crack down on this stuff... let the registration lapse, pull the plate off, transport it on a trailer then it's fair game.
@@BTrain-is8ch yep, and honestly it's getting annoying, ever since the EPA has started raiding people RUclipsrs have been saying "Cat delete" far more often.
When in reality they need to just stfu, everyone and their mom who knows anything about cars knows getting rid of the cat increases power, especially in turbo cars.
@@BTrain-is8ch In my state, you are not allowed to have an Unregistered Vechile, Period. Doesnt matter if its Offroad/Track only, has to be registered and have plates, even if it doesnt run.
The EPA also didnt "Crack Down" they have been raiding and shit since the 80s, the news is making it out like this is some new thing, its not. The EPA doesnt want you to have a Race Car, they dont want the NRHA, they dont want Nascar, they want everyone in Teslas and Prius's. The fact we still have them still, is a testament of those fighting the never ending battle.
They also dont take into account that the Electricity needed to power everyone with electric cars, would cause more issues than the Gas cars do now. They have unfeasible Ideas, and logic based on Fear and not data. That is unless, everyone went to Solar/Wind power to power all the Cars, because that just worked so well for Texas.
@@GOTTHEFUZZ Again they didnt just start Raiding people, they been Raiding people since the 80s. Its just that time of the year, and thanks to Covid they got less to do in office and more time to raid people.
Plus they have Biden riling them up, pushing them to enforce more, to make up for the 4yrs that trump made them chill out. Thats why they are trying for the RPM laws, not because they didnt want to before, it was because they never had a perfect storm, of a Pres, House and Senate, Electric cars, to actually pull it off till now.
Our Moron Govt, basically just banned Vaping, even with the Facts showing its a Harm Reduction, and every other country embracing it. We got morons in power, thats simply all it is.
@@cyberlocc I know nothing has changed. I know the EPA does this periodically. I've watched a few rounds of it and seen the RPM act come up each time. The EPA is in fact cracking down on it right now because they are actively going after brands/companies that sell/install/etc parts marked "for off road/closed course use only" that end up on street vehicles. I'm aware that there's no new law and the stuff they are dealing with has been illegal for decades.
Anyway, the EPA doesn't care about legitimate race vehicles because they are so rare as to be irrelevant.
P.S. Natural gas powered plants made up around half of the generation outage in Texas.
Also dumbing it down to anyone can understand and explain the basics in a very understandable way is very impressive, I only say this is because I had a stroke a couple years ago and I don't understand directions very well but this I can understand. Kudos!
257hp in a Miata must feel like a rocket ship lol
Or a rocket bunny
Tyler Ray is making over 500
@@thefinalroman Taylor Ray.
I've driven a 270hp Miata, and yeah, can confirm that its pretty impressive
That amount is perfect. Still grippy and not too much but a hell a lot of fun. 500bhp is silly, where can you actually put that down. The Miata is about going down fast country lanes, not highway
"Is a cat delete worth it?"
EPA, "Hippity hoppity your cats are forever your property!"
Please go sign the RPM act. (Make sure you read the act before you sign it. It is important to keep an open mind and understand what you are signing.)
@@deepwater4532 YES
I still have my cat but I removed it from my exhaust so it wouldn't get stolen.
@@deepwater4532 murica haha such a police state and 3rd world country
@@deepwater4532 You should tell people to read it first and understand the argument.
Scumbags in my city are deleting people's catalytic converters whether they want it or not. It's a big problem right now.
Hey sounds like a win win, let me just place my sports car on the street and hope they steel my cat... of fuck.... my wheels are gone!
It's happened to 2 of my coworkers.
One while they were parked at work.
@@jakeaaron parked it quiet as as a baby with cats on and when they are cranked it up after work that thing was a roaring T-rex 🤣🤣🤣
It must be weird feeling when you turn on the car and surprisedly sounds like a rocket
Thought my 4runner just had a really rich cold start and that's why it was so loud. Until I touched the throttle lmao
Zach is literally the best thing to ever happen to donut. Knowledgeable and entertaining. Literally built for this
God man. Zach is like the dad I see teaching their kids about cars. I had my dad but he wasn't a car guy. He fixes what he knows but that's it. So it's cool having such a great person like him teaching me
Dont give up! I'm the only gear head I'm my family and no one ever taught me anything, but I know alot of stuff now so dont give up and keep learning 😄
Muffler shop owner: So, we’re not SUPPOSED to remove your cat...
Muffler shop worker as owner tells me this: **Sawing off cat**
Lmao
Guy told me he wouldn’t even work on my vehicle without putting on cats. Apparently it’s a $175,000 fine if you’re caught doing this for customers.
give hate on my video
@@Itsfarko Just need to get it in writing that you agree it's for off-road use only, lol
In my country if you park your car in the wrong neighborhood Crackheads will do a free Cat Delete you just have to install the straight pipe
😄😄😄
so the US?
In the UK, they are currently targeting MX5s just for the cats, they are worth around £500.
In the uk if you park youre car anywhere you get a cat delete even on youre driveway
basically yeah I'm British too people just drive ride looking for s target unless you have a garage or secure drive way but nobody people have garages in this country since are houses are tiny whilst American houses average double the size and they usually have a garage or actual drive way
Most people in this country have to park on the street infront of their house but it's not your property or private but a public road and If a football match is going on and you live near a stadium well good luck If you haven't already parked your car
It is worth it for older cars that need ZDDP added to the oil. It is said it will probably clog up catalytic converters. But old flat tappet engines really do need the zinc.
And sport fuels ( leaded fuels ) kills catalytic converters...and people too.
I could see the "If you monkeys would've let me wait to get the turbo set up I wanted we wouldn't be dealing with this" in Zach's eyes 🤣
I love how every shop ALWAYS use a cardboard to write anything, no shop ever have a piece of paper
Y’all ever worked at a dealer or any shop? There’s paper for the W/O
those car parts come in carboard boxes normally, so it's recycling 4 ya, they might delete cats but they compensate not wasting paper
Paper is weak cardboard
Cardboard is just shop grade paper
Papers too expensive and parts come in cardboard boxes. Why buy paper when you get free cardboard?
Donut: Gets a welder
Me: So much more room for activities!!
Should have happened a long time ago but better late than never. Next is a lift!
S2 money pit: Pipe Buggy miata?
As someone who works for a high end welding company I would like to make one tiny correction, you don't necessarily need co2 to weld. You can lay down some pretty nice beads with just argon. However Co2 mixes are used in certain situations such as welding carbon steel or doing a carbon build up. Nitrogen can also be used for specific purposes as well. Love the Vid Zack.
Theres more than one kind of welding you know.
Personally I work with whatever I can get my hands on. Learning to adapt along the way
Co2 is used to increase general hear input also changes the profile of the weld (tooth shaped penetration). That’s why co2 is required for most applications
tbh this welding tutorial is the best one I've seen
My only issue is he isn’t wearing gloves.
@@perkipushb Saw that, too. Bold move
nooooo my heart is gone!
The “welding with the battery connected caused my buddy’s back glass to shatter” is my big issue.
You gotta Wear long sleeves or you'll get the worst sunburn of your life.
“It’s a cheap bandsaw” A.k.a. it’s from Harbor freight
Exactly what I thought lol. Nothing wrong with harbor freight if it’s a tool you won’t use all the time
So true.
You can get away with a handheld bandsaw... With aftermarket stand even cheaper than that hf one...
The blade is really most important anyway
@F*СК MЕ - СНЕCK МY РR0FILЕ you have never felt the touch of a woman.
Harbor freight bucket directly behind the saw confirms this.
I really like how Zach explains things, this has been a good series.
This is why I'm here. Not a car guy (live in Manhattan, don't even own one)... I found Donut based on the Tool Party episode about rust removal, stuck around because Zach, Jeremiah, and Justin were super entertaining in that episode. Literally the first few days I found y'all, the Tool Party eps were the ones I watched first because I just found your approach interesting.
Now I'm working my way through Money Pit and Zach's hands down one of my favorite RUclips presenters at this point, and now I just accidentally got a welding tutorial because why the hell not.
Grand finale has to be: “How to pass that Cali Smog test”
Buy a new car every 5 years. LOL
@@iivv_nn Sure, that's why my 2005 with 185k and 2010 with 90k pass every time. Hmmm.
Know a guy
@@seanabel3532 joke went so far over your head
@@marcusborderlands6177 thinking the same thing
6:45 even the cameraman nodded their head🤣🤣🤣
It would be really interesting to see the stock cat compared to a high-flow aftermarket one. And then compare that to the test pipe after you fix the boost creep issue.
I believe StreetFX from Australia did a car vs no cat vs hi-flow on their 800~ HP Supra. Cat delete added fuck all power. Not worth a 10k fine down under. Smells like shit as well.
@Shndon430 Hurtado high flow cats are designed to have a negligible impact on flow compared to a straight pipe. Much higher flow than normal cats, which themselves typically flow better than mufflers.
@@Phymatic There is not a Cat in existence that can handle 800HP engine, so that doesnt add up.
The highest HP cat you can get is 700 for a kooks green. After that, you will melt them constantly, they have to be removed pushing past that point. Lots of people have even fried kooks at 700hp.
@2D Link?
Also a Link to that being proven. Because that would be the first I have ever heard of that.
Unless you talking about those Vibrant GESI, because I can already tell you, those don't even handle as much as Kook greens, that's marketing not Reality.
Thats why the Vernon's have like 6 cats lol.
@@cyberlocc I'd have to find the video as it's been a few years since I've watched it. Their Supra was not running a cat to begin with but they added one for the video to see the real world difference. IIRC they lost like 6 WHP from adding it. I kind of recall them being high 700 WHP maybe just over 800.
Honestly dude... most realistic and positive overview of MIG I've seen on YT. Most are either explaining it like freaking theoretical physics whilst others are "Bubba" using his gas station sunnys and no top on 🤣
Loving your Donut content 👌
"She is flat, [she is mild steel], and she is cheap, and she is for a two and a half inch pipe."
That’s what he said
FINALLY
He pushs and pulls, depending on how things are, and whats going on!
Yea, we know you perfer pulling!
"she is for me" - Zach
I just wanna say thank you for putting that yellow bar the length of the ad so i know how much to skip
Get sponsorblock. It's a browser extension that automatically skips sponsored sections of videos based on a user-created database. Alternatively, get youtube vanced with these features built in.
Do a “is a Jet engine swap worth it?”
gas turbine car
@@trainzguy2472 best power to weight ratio baby
Simple question.
What about the 02 sensors and computer?
I assume Deleting the cat will throw o2 codes which the computer will respond to by changing air fuel ratio. Most likely creating less than optimal running conditions.
What Zach tells me to do: buy thousands of dollars worth of tools and weld together a pipe
What I do: $40 angle grinder, some pipe, and a few exhaust clamps
Your using pipe? I used old soup cans!
@@devinbender8428 i used a couple paper towel rolls
Flexseal
Just do a muffler delete too and call it a day.
Epoxy and paint make me the welder I ain't
It'd be cool to see a test with a high flow cat too, compared to the NA miata OE cat. Though there's probably dyno charts out there already for those, I didn't see any when I was briefly looking around.
I'll never delete the Cat because i dont want to be called alina
But alina is much quicker 🤷♂️
*slow clap*
Bruh... Is this the mom version of dad jokes😂
Amazing 😂😂😂
Hahaaaa
I have been welding and building Hotrod since the 1970s and tend to be judgmental but I absolutely love your style of explaining things you do it very well.
We DONT DARE say “cat delete” out loud round these parts... Siri or Alexa hear that shit, EPA liable to pop up at our for a surprise inspection 😒
Hell yeah what about thag
I feel you.
He said it! Hello, EPA?
And that is why, other than my phone, I will never have a smart device in my house. Hell, started leaving my phone at home too. If you have covid, they'll use it to track you.. !
@@SupraSav oh god, who let out all the mental patients.
Zach kinda feels like the older brother I wish I had so far he taught me more than my dad about cars
awhahaha same
You can tell this guy works his ass off for these videos. Kudos.
true, but we could have seen a lot less of the fab process. at most, this video should have 5 min long and was disappointed to see this done on a turbo car, i want to see the gains on an naturally aspirated car.
@@zerocool6257 You could always make your own video
@@sethallison5682 not exactly, he’s gonna have to get a wielder, a car to build a pipe for, all the parts for the pipe, and something to cut the pipe.
This video is an absolute life saver! I've been looking for a place over here to set me up with a decat but so far no luck. Thanks to this video I can make my own. I've watched loads of donut media videos but none with this dude really informative stuff, so thanks!
Reminds me of when a guy came into my work and wanted to put a motorcycle battery into his Civic, for weight issues. I told him if he's that worried about saving a couple pounds try a diet.
Like the time a guy came to a maxwell spot and asked if they had anything to drink with low no sugar cause he has diabetes I murmured under my breath yeah they got water.
@Philosopher Dan absolute sigma male badass
Civics (the sub 00 models) work with riding lawnmower batteries... Had one in mine for a summer, hahaha. (Not for weigjt though)
Just do a solid state
I once got a warning in an online forum when suggested something like that in general 😂
If you have a Nissan VQ-powered car and neighbors: the answer is NO
Don't own a VQ motor, but one thing many of forget is that if you do a cat delete, a resonator is a must
You would want a valve to make it quiet at startup
Then my neighbors are gonna hate me cause I already got some in the mail 😂
I blew my cats out in my 350z. Replaced them with aftermarket 'race' cats and the sound was horrible.
@@ThatGuyFromThatOneApp In my book it would be the other way around, if u wanna free the engine souund u shouldnt hurt the enviroment by deleting the cat lol.
" she is flat, she is cheap, and she is for a 2 1/2 inch pipe"... I thought you knew my girlfriend for a second
I’m finished😭😭😭😭😭
We all do....
Gold
You have a 2.5 inch pipe? Sorry, dude.
lmfao
Yeah I think alot of people would like this video but on a NA vehicle to see if it makes a difference with our normal cars, maybe even do a muffler delete vs mufflers and cat vs no cats on NA
Got a 96 mustang gt. Flomaster mufflers and off road h pipe. Those 6 cats weighed 200 pounds. I don’t know about power but sounds awesome and better mpg
“Yo I need to put the hose on my shoulder to not get caught on anything”
*immediately welds with hose on lap*
It hurts when I wee
It's called a lead not a hose 🤣🤣🤣
Bro wtf
also moved pipe & flange to edge of table...
I tig weld with the lead on my lap
The cat delete making big power gains comes from the early pellet type cats that were much, much more restrictive than the modern honeycomb type cats. Try this experiment with an old Dodge turbo from the '80s and you will understand why the cat delete trend started.
the cats on new camaros and corvettes are almost NEVER ever deleted in any performance application because they are designed so well there is simply no reason to delete them.
@@mathewhoffer4541 They get forcefully deleted if you park it in any urban area. BYO straight pipe, though, only the disassembly and removal is free.
@@GTAIVisbest lol 😂
@everyday tenor or tune it 🤷♂️
@everyday tenor It being street legal depends on where you live. If there's no emissions testing which is far more common than people seem to realize then it's worth it if you have the coin.
It's so nice having James and the fun he brings and guys like Zach with the clear and concise info he provides. Nolan is like the every day guy we all are. The whole Donut team is awesome.
Solid assessment, I agree 100% 👍
You guys are life saver been watching some of your turbo videos for the miata and leanered alot been trying to find a turbo for my 2018 civic it's a 2.0 6speed. It's been really hard to find the right one since I didn't know to much.
Donut is creating the Need for Speed in real life, and Zach is the expert mechanic that upgrades your car
Oh my god a donut video game would be so coool, partner with forza and make jobe the mechanic in the next game
The real life "Junk man"
What can L.A.'s finest do for u?
@@spencerfalzy that'd be a hilarious animation. Like the shitty car games. Have a shitty 2d image of jobe with his arms crossed and grime on his face sliding into frame saying "hey kid you don't got enough cred for all them hrsprs"
@@kevobrando95lx44 *installs radiator
AAAAALRIGHT you’re a cool guy now
considering the upstream backpressure of any turbocharged configuration, the catalytic converter may not play as big of a role in choking the exhaust when compared to a naturally aspirated engine, i think a smog era v8 with cats vs test pipes would be an interesting comparison
Do you think my 96 V8 Tbird would be a good candidate? It has a muffler delete and open air intake atm.
@@howieewalt1322 that would be a great engine to test, even better would be the equivalent year with that same engine as it was configured in the mustang gt and equipped with a whopping 6 catalytic converters, 3 per engine bank, the most i've seen on a passenger car
@@howieewalt1322 you started having higher flow cats by the 90s, you'll get a gain but probably not as much as you would in the real smog days. A good candidate would be a Mustang II king Cobra which was 5.0 making 149 HP.
I did a 2012 sierra cat delete with headers and my mechanic drove it after my trans was replaced and was totally surprised between the difference of our trucks. He also had a 2012 with the same motor. I felt a little difference honestly. nothing significant tho.
I'm not so sure. I may be mistaken, but I think it plays a bigger role in turbos. An Engine Masters episode tested exhaust flow in turbo and NA applications. IF I remember correctly, better flowing exhaust (post turbo or post headers in the NA's case) were more important in turbo cars. In my limited experience, the older catalytic converters did more to choke exhaust flow and power, but even then not as much as people expected. People greatly exaggerated the amount of horsepower catalytic converters lowered. The bulk of this belief was perpetuated by old school muscle cars fans who saw power drastically reduced with emissions. What never gets considered is that this also coincided with a move to measuring an engine's net horsepower vs its gross power. Net horsepower is usually 20% less or more. Then with the move away from leaded gasoline, compression ratios were usually lowered by around 2 points to account for lower octane fuel and prevent detonation. This part actually CAN be blamed on the catalytic converters as leaded gasoline can't be used in cars with cats and the phasing out of leaded gasoline was expedited. However, i believe toxic leaded gas would have been phased out even without the invention of catalytic converters. I've traveled in countries 30 years ago that still had many leaded gas cars on the road. It's an unpleasant smell in congested cities. As far as modern cats go, I've seen a few tests done on NA LS engines and the increase was usually around 3 horsepower. These engines were usually around the 400 rear wheel horsepower mark. I decided to go with high flow cats on my header setup because of the noise and smell that catless systems create. It's surprising how much "rasp" catalytic converters cut down and how awful exhaust smells without cats. The only two reasons I was hesitant to put catalytic converters was the 150 dollar price increase and the small possibility of cats aging and clogging in the future. Of course, at that point, I'm just going to hollow them out. The 5 horsepower I MAY have lost (most likely less) was not a factor at all for me.
6:29 "Most welders have just two knobs... with random numbers on them." I'm worried for the miata...
Gotta keep those that don’t know interested.
I mean, he's not wrong for most *basic* welders.
i have watched money pit many times as i love zachs hosting and just easy understanding, this video in that short bit of weilding i learnt more than 3 months at college, out teacher didnt explain as well as zach did.
Zack - "Is a cat delete worth it?"
Cats- "What the *meow* bro? >:C"
Would be interesting to test a high flow cat vs stock vs test pipe. The very small gain is exactly what I expected for the level of build, even with the turbo the cat is barely restricting flow. Cats don't really start to become a restriction until you start trying to produce big power and you can usually size up the cat or run high flow cats if you're trying to make big power and stay legal.
High flow cats are just cheaper catalytic converters, they flow about the same. The main difference is lack of precious metals.
@@97markviii My high flow cats are completely hollow, but do their job..
@@97markviii think you're confused
Cats clog
@@97markviii
What do you mean. A high-flow cat is just short for: high -flow catalytic converter
Sign the RPM act so we can keep videos like this
"BuT mUh cLeAn AiR"
-every climate change extremist
@@kgkbuugj As if the few hot rodders are to blame for all the pollution.
@@kgkbuugj yes but they don,t kwon how much CO2 is creating for they shity soy beams
because the amazoan rainforest is destroyed for that purpose
RPM Act only protects track-only cars, not daily driver mods.
@@C6Z_Bob A better argument is the fact that the overwhelming majority of people who claim to care about the environment buy 90% of their stuff made in China when China is the #1 polluting country in the entire world across all categories including:
-CO2 emmisions
-plastic waste pollution
-chemical pollution of rivers and lakes
-general waste pollution of rivers and lakes
-industrial waste pollution
-smog and smoke pollution
-chemical vapor pollution
-hazardous chemical pollution
But no. They keep buying products made in China while claiming they "care" about the environment. Sounds fairly hypocritical if you ask me.
He reminds me of guy I used to work with it’s awesome when people truly love sharing and have a positive attitude.
Your know you’ve matured when you see +30hp and say it’s “not necessarily a good thing”
Taking notes on a scrap of cardboard with a sharpie. Perfect.
Pretty standard in most shops tbh, cause paper gets black faster
Making use of the old CAD. Cardboard Aided Design.
Most relatable part of the video lol
One tip about the band saw... If you keep your guide wheels as close to the material as you can, you reduce the blades penchance to wander while in the cut and should produce straighter cuts. Abviously as you mentioned, the cheaper the saw the worse the cut quality, but this should help get it as good as it can be!
Tons of good info... Also thanks for the welding lesson! Great video
Never weld with exposed skin, UV light is no joke.
I could never delete my cat, she’s adorable and cuddly.
@_ thank you
@_ hey how do you get that stickers in the chat?
@@LEEGOOVER9901 :awesomeR: without the R
@@sbrbrz777 is there any other codes?
@? how to get it? The codes...
How are you gonna do a cartoon character of Zack and not emphasize his amazing blue eyes?!?!
Its the filter
@Nicholas Rosanio Ok weirdo
Why does that make me weird? He has nice eyes. Do you feel better about yourself for getting that off your chest? Do you think you are funny being an asshole for everyone to see? “Hey everyone look at me I called him a weirdo because I’m insecure of with my sexuality” Ass hat!
“5 horsepower”
Honda Fanboys: *heavy breathing*
God all the stock civics with diffusers, splitters, spoilers/wings are just foaming at the mouth at you, you be spitting mad fire XD
Its practically a f1 car now
I lsx swapped my civic and for some reason I still said "wow"
@Ryan Couchman if you meant civic then Ohhhhhhhhhh yes I did a lsx engine in my civic
$$$ to HP ratio is pretty good, that scrap steel probably cost $10. A CAI that performs that well will be over $100!
as someone who has been certified in welding through school and works for a welding company i can say u worded and explained everything perfectly when it comes to helping someone to understand the basics of welding
Then you agree that a tig weld would have been preferable over a mig in this situation?
No MIG is fine. Why bother with the additional headache with TIG. It's a test pipe, it's not hold pressure, not holding any weight, nor does it need to pass any AWS or any other wps protocol/inspection. No one is going to see it or really give a shit what it looks like in the end.
@@fyreleya3005 because tig is exceedingly stronger, less porous, better depth of penetration etc.
@@fyreleya3005 I'm not saying MIG isn't fine I'm saying TIG is always preferable when you're looking for a solid non porous seam with deep penetration.
I literally JUST took my cat off. I got out from under the car, looked at my phone, and saw this in my notifications xD
No emissions test in your state?
Are you Zach Jobe lmao
was it worth it?
why would you do that, just get a better exhaust
Lol now time to put it back on because of the new federal regulations
“Is a cat delete worth it?”
The EPA: 👀
Can you say "Diesel Brothers" ?
This isn't the smartest thing rn
@@adamwonder2207 ?
@@trevorreid9142 the epa revised the clean air act and stuff like this (which was already illegal) is now super illegal.
@@trevorreid9142 they go after people that make videos about removing factory exhaust and putting aftermarket so jts not smart to do this at this point of time
Do a “is paint/wrap worth it?”, the Miata ain’t lookin too good ngl
They compared plastidip to wrap on the hi low series.
ok humza
Its looks fine to me
Well it is a miata
Its a race car not a show car
Someone who is not an idiot nor treats viewers like idiots is a refreshing change. Unlike most Netizens I don't think I know everything, so this educated me a little in something I needed to know.
What a dude bro. He wrote his results on a piece of cardboard he tore off of a box by hand. No fruity white board with colored markers. I love how informal this show is.
5 minutes in and this is the most effort I've ever seen put into a decat pipe lol
My next door neighbor claims he did a "cat delete" on his 1996 Oldsmobile... and by that I mean I'm pretty sure he just cut the exhaust before the cat and left it that way. Sounds like a nascar stock car and he goes to work at 6AM... I'm not too fond of it.
Those Miller's are absolutely awesome machines. I was an HT in the Navy and we did A LOT of welding.
I'd like to see a high-flow cat tested ad well. It'd be cool to see stock, high-flow and catless with a comparison of power and also emissions. Measure ALL the data!! :D
Man what car guy actually cares about emissions levels though?
@@benb5308 Well for starters any that wants a road legal car that will pass a legally mandated vehicle inspection where a missing catalytic converter is an instant fail. I know this is a strange concept for Americans.
@@BigUriel yeah pretty much any Americans other than those in Canada. Mandatory vehicle inspections are bullshit and I'd refuse to live anywhere that has them. If your lawmakers are dumb enough to think vehicles are a large factor in co2 pollution than car inspections are probably the least of your worries
For me it's because I still want a little back pressure so I don't strain the header mainly because I've been there. Also I don't like to have more volume than tone. Just want that tad bit of extra power when I swap the exhaust system out
We do not need a cat here in Florida,been catless for years in my 96 Jeep XJ!
You guys should do a video about the epa rpm act stuff going on.
I appreciate that you did an extra series of runs with the cat to account for the boost creep for a more direct comparison.
For anyone who is wondering ... the song in the DM Underground video is " The End Of All Things · Niklas Johansson "
I’ve seen this done one other time. Back in 1981 one of the popular performance magazines got to test the 1981 Pontiac Trans Am with the turbo 4.9 V8. They were allowed to test pipe it while they had it and on the chassis dyno pull it made exactly an extra 100 horsepower without the cat.
Who noticed a cut on our man Zach's hand.
Such a hardworker
😂👍
‘Welding is a money pit’
Very true, but your welder does have a better HD display than my TV
Awesome job, love the way this was very informative. I would love to see an NA version of this test, 1 as confirmation between the types of power production, and 2 to help identify the importance of backpressure in NA vs Turbo in the exhaust piping
In regard to your comment of backpressure, you are referring to the velocity required to keep the backpressure low?
You are right. It is not the same this test with NA engine and Turbo engine.
Wow I really appreciate your talk throughs on the welding bit. I've found myself with a "weld bug" and have been actively working on learning the basics before ever actually getting a welding gun in my hands. Thanks!
*Yesterday* Jeremiah-"don't cut out your cats!"
*Today* Zach-"CUT OFF YOUR CATS!"
Zach your awesome.
The top comment and you used the wrong you're.
And you realized that now...
@@garbagetrash2938 how exactly does someone Zach their awesome ???? 🤣🤣🤣🤣
You are too
To each their own so dont attack my opinion, unless you just want to...be my guest. Money pit is in my top 4 or 5 donut media stuff including past gas, but I find any donut episode with Zach extremely hard for me to watch. It's str8 up boggling for me to like the money pit as a guy that doesnt know how to work on cars but be so annoyed with the host. Honestly dont like anything about his vibe. Jeremiah and james are my favorites and the rest of the crew is cool , but zach just rubs me the wrong way. I'll keep watching money pit nonetheless
Where I’m from, a test pipe is when you just completely get rid of the pipe without replacing it. And a straight pipe is whenever you replace the cut out section with an actual straight pipe
Yo nice name
@@cadesmith2362 dude no way. I made an Instagram group with 37 of us
Part of the reason for a test pipe is it increases boost lower in the rpm range which creates more power and better response. And part of the reason for " bolting " on 30 hp with a simple test pipe is it facilitates more boost.