Is a Cat Delete Worth It?

31. Ožu 2021.
1 580 563 Pregleda

Thanks to Honeygain for sponsoring this video! Head on over to and enter code DONUT & you’ll get your first $5 to your Honeygain account.
For centuries humans have had an unanswered question: ARE TEST PIPES WORTH IT? Well today we’ll teach you how to make your own test pipe and then take it to the Dyno to see exactly how much of a power bump we get it! Let’s do some race car stuff bby.
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  • DIYflamethrowers on IG and the same name for my website. I'm just a one-man business that makes them here in the USA, specifically Chicago.

    doire aintudoire aintuPrije sat
  • Are the ads worth the wait...nope.

    Stewart HaddonStewart HaddonPrije 5 sati
  • Unless you are doing some major changes to the engine, there is no reason to delete the cat, because you can reach the limits of a stock turbo with just a tuner. And as he shows , the deleted cat interfered with the waste gate controlling the turbo at high rpm. So it's cheaper, better and easier to just take it to a tuner. The only time it makes sense is if your internal engine components can handle more power than the exhaust system can which point you are probably going to need an entire exhaust system anyway. And that's the real issue , if you build an engine to the point that you have to remove the cat, you probably need an all new exhaust system anyway.

    Glenn ChartrandGlenn ChartrandPrije 7 sati
  • My cat saw the title of this video and now he seems upset with me ...

    Jagger BackJagger BackPrije 9 sati
  • What if you do this conversion on a naturally aspirated car? What would be the results in your opinion?

    Lux ArmigerLux ArmigerPrije 11 sati
  • Good to know once my cat get's stolen I'll get extra 5hp

    Janer SulceJaner SulcePrije 13 sati
  • Good

    GameRecordChilloutGameRecordChilloutPrije 16 sati
  • Donut needs an anime series

    Alex MendezAlex MendezPrije 17 sati
  • If the weld has slag you drag, otherwise push your weld. Pushing your weld keeps the gas blowing forward, will save you from prosperity in your welds.

    Gage MartinGage MartinPrije 19 sati
  • Pushing is preferred but pulling is ok when there is no choice because sometimes you HAVE to pull. But pushing creates a stronger weld. Pulling can leave a little crater in the weld where the actual joints of materials are. A cut and etch test proves this

    Kickin' Wing HotboiKickin' Wing HotboiPrije 19 sati
  • After the sponsor video subtitles are freaked up. Please fix it. Thanks.

    Samet ALTUNSOYSamet ALTUNSOYPrije 21 sat
  • heres a follow up.. how much to the emissions change between the two setups if the car is properly tuned?

    Glen NewellGlen NewellPrije 22 sati
  • A late buddy of mine used to call taking off a cat and installing a testpipe. "The 5min, 5hp gain" do he was dang close if the hp gain lol

    Dirt ShartDirt ShartPrije 23 sati
  • Zach : great mechanic, okay welder.

    Walker SchererWalker SchererPrije dan
  • DIYflamethrowers on IG and the same name for my website. I'm just a one-man business that makes them here in the USA, specifically Chicago.

    aola wiliaola wiliPrije dan
  • This video is dedicated to John Powell of Powell Race Shop in Port Perry Ontario who said that he has never seen a dyno sheet ever showing that a "catless" downpipe made more power than a "catted"downpipe. also to all his sheep followers who claimed he was god when many many people(who knew more) pointed out his BS

    Twin TurboTwin TurboPrije dan
  • Are those rbf1s?

    Josh GovierJosh GovierPrije dan
  • Next time you spend all this time and money on a car for our entertainment, make sure it's not a shitty Miata 🧡

    SwitchellmobbSwitchellmobbPrije dan
  • When doing a show like this it’s always a good idea to put on all the welding PPE. Gloves and sleeves are always recommend when welding. It not only protects you from sparks and hot metal but also the light given off from the welding process will damage your skin to the point of possible skin cancer. Please put on PPE so people watching don’t pic up bad habits. P.s. love this show otherwise!

    Bender BeermanBender BeermanPrije dan
  • Ok guys - I NEED that intro track - what is it? Who did that? Anything!

    Bartosz AndrzejewskiBartosz AndrzejewskiPrije dan
  • I work at a parts warehouse and I love seeing parts we sell on money put. Like the pipes we got tons of thoughs exact brands sticker and all.

    Cody WoodCody WoodPrije dan
  • Ah, Pony Power, the new Horse Power.

    KalderKalderPrije dan
  • Love the mask wearing virtue signaling when working with no one within 50 feet in an open garage. Well done. You sir, are making a difference!

    Mark GuntherMark GuntherPrije dan
  • There were quite many cats wandering around our house. I deleted them with my rifle.

    Hannu HanhiHannu HanhiPrije dan
  • So how did the rear window shatter? The defrost elements getting overloaded?

    brenden walkerbrenden walkerPrije 2 dana
  • Did he measured the inner diameter of the exhaust manifold and the test pipe and making sure they have same inner diameter?

    KubKubPrije 2 dana
  • Leave the cat on, put an electric exhaust dump before the cat controlled by the boost controller. So when you mall crawling you don't have to deal with the smell, and you bypass the cat, muffler and 10' of pipe when its time to go.

    Janky ShackJanky ShackPrije 2 dana
  • Is a CAT delete worth it? The Car Community: Yes! The environment: no. The EPA: Not at all my friend

    Spectacular SpaghettiSpectacular SpaghettiPrije 2 dana
  • You should've added a HighFlow Cat to compare with the test pipe and Cat

    The EcstaticThe EcstaticPrije 2 dana
  • TÜV sagt nein!

    Сэр ЛанланланСэр ЛанланланPrije 2 dana

    LocalsOnly . JpLocalsOnly . JpPrije 2 dana
  • This is probably a dumb question but why is more boost bad?

    hudsonhudsonPrije 2 dana
  • I just drilled a hole through the honey cone with an old 5/16 long wood bit,it still passes inspection (by LOOKS)lol//I was told the cone was pluged so that fixed it

    chrispy Criterchrispy CriterPrije 2 dana
  • I’d be interested in seeing how a high flow cat compares to the test pipe and the stock cat.

    Dj Not NiceDj Not NicePrije 2 dana
  • When you Weld please remember to cover your hands and arms So the rays won't make contact with your skin😁 a tip from my teacher

  • Dont like this guy

    Eugene SwaztekkerzEugene SwaztekkerzPrije 3 dana
  • Slag=drag Flux-cored (FCAW) drag/pull torch in direction of weld Solid wire (GMAW) push torch in direction of weld

    matthew Lmatthew LPrije 3 dana
  • 5:58 somebody needs gloves lol

    João Guilherme Bezerra AlvesJoão Guilherme Bezerra AlvesPrije 3 dana
  • Cat removal on a K Series is by far the best way to free up power. However on other 2.0 NA engines I’ve had from other manufacturers (Renault), the Decat had a negative effect, due to the scavenging of the engine.

    Josh WattonJosh WattonPrije 3 dana
  • “Yo I need to put the hose on my shoulder to not get caught on anything” immediately welds with hose on lap

    hoiy vinosahoiy vinosaPrije 3 dana
  • If you're worried about boost creep. just port and increase the size of the waste port/flapper... Not a big deal

    0ttoman0ttomanPrije 3 dana
  • But how did it SOUND?

    BroclamBroclamPrije 3 dana
  • Why waste your time with losers investors when you can earn up too $1200 with only $100 minimum investment Ask me how to get started

    Victoria Williams HVictoria Williams HPrije 3 dana
    • I LOVE cardboard and sharpie note pad. Am I the only one?

      hoiy vinosahoiy vinosaPrije 3 dana
  • Way more power =7hp! Frankly I would rather have clean air?

    Dick MickDick MickPrije 3 dana
  • This is a legit learning video

    Mason HallMason HallPrije 3 dana

    Frank289100Frank289100Prije 4 dana
  • took my cat off in my 85 monte carlo 305, and she sounds a little raspy but when I get some mufflers should sounds nice, also switch up to an x pipe soon.

    Robert PetersRobert PetersPrije 4 dana
  • 14:45

    Josefino MercedJosefino MercedPrije 4 dana
  • My stupid ass looking at the title confused: "Why and how do you delete a frickin' cat?!"

    yoofer121yoofer121Prije 4 dana
  • How do you know you're friend's window broke because he didn't disconnect the battery?

    ATF Ace.ATF Ace.Prije 4 dana
    • You guys live my dream life

      wnnalis cioovwnnalis cioovPrije 4 dana
  • I already know how to weld it’s pretty easy now but the only thing is tig is fucking hard but once you get the hang of it it’s easy also I’m surprised you don’t have a tan 😂😂😂😂😂 with that shirt what your secret

    Dar WinDar WinPrije 5 dana
    • Would love to see the same thing but with a NA engine!!

      wnnalis cioovwnnalis cioovPrije 4 dana
  • Your mig gun cable should be kept as straight as possible to prevent bird nest. And you didn’t wear a jacket which is not good as mig welding produces several different lights, infrared, ultraviolet, and there’s another I can’t think of and it produces radiation, not wearing proper ppe is rather reckless.

    Andy GoddenAndy GoddenPrije 5 dana
  • Just put your cat back in before you need an emissions test 😂

    TheSaxAppealTheSaxAppealPrije 5 dana
    • Next on EPA's list for huge fine for stupidly removing his cat.

      miko foinmiko foinPrije 4 dana
  • I want to delete my wife's cat. Not the catalytic converter in her car. I mean her pet.

    MarvMarvPrije 5 dana
    • Nice eye protection, should stress how important.

      miko foinmiko foinPrije 4 dana
  • Why not a new high flow converter

    Mark McclendonMark McclendonPrije 5 dana
  • 5:38 the “machin” xd

    Benja Mtz SBenja Mtz SPrije 5 dana
  • I LOVE cardboard and sharpie note pad. Am I the only one?

    Nicholas ThompsonNicholas ThompsonPrije 5 dana
  • lol, Rhodium or ROADium!

    PunkinhedPunkinhedPrije 5 dana
  • It's always worth it, power, sound, crackle, all you need is a simulator to get around it

    frank wfrank wPrije 5 dana
  • You’re in LB area which equals illegal, not worth it in my book. Plus think of the environment....just saying

    Peter HorvathPeter HorvathPrije 5 dana
  • Okay so I’m sorry to do this but it’s not a torch it’s a freaking whip know your facts

    Cody GroatCody GroatPrije 5 dana
  • The biggest benefit of a cat delete is the reduced risk of it clogging and overheating the exhaust and cylinder with backed up heat

    joshdrobny93joshdrobny93Prije 6 dana
  • Paul rudd look alike

    rrPrije 6 dana
  • Would love to see the same thing but with a NA engine!!

    Outlaws driftersOutlaws driftersPrije 6 dana
  • You guys live my dream life

    Anthony ArroyoAnthony ArroyoPrije 6 dana
  • I can just imagine the EPA knocking on your door after you made this video

    wnnalis cioovwnnalis cioovPrije 6 dana
  • Nice eye protection, should stress how important.

    Deadsy PadillaDeadsy PadillaPrije 6 dana
  • Next on EPA's list for huge fine for stupidly removing his cat.

    alan connellyalan connellyPrije 6 dana
  • How old was the “stock”cat? Need a new cat to compare if it was used as old cats do have hairballs

    Life Saving DefenseLife Saving DefensePrije 6 dana
  • Skip to14:40 if you can weld and are interested only in the results

    6767Prije 6 dana
    • I need a miata!!!

      wnnalis cioovwnnalis cioovPrije 6 dana

    Anthony BrownAnthony BrownPrije 6 dana
  • Zachary, please come home. We’re worried about you ever since you left with that “car from Japan” you kept going on about. Your mother and I miss you very much. Love, dad. P.S. Please do a video on high torque starters and if its worth it. The old Camry doesn’t turn over like it used to.

    Romano NaidooRomano NaidooPrije 6 dana
  • That’s a ton of hp on a Miata

    goalmaker88goalmaker88Prije 6 dana
  • Came her for a cat delete, got a math lesson and a bandsaw plus welding tutorial. ☝

    ice45kice45kPrije 6 dana
    • ‘Welding is a money pit’ Very true, but your welder does have a better HD display than my TV

      Shauka HodanShauka HodanPrije dan
  • Miata LSD next!

    Syazzy SlacksterSyazzy SlacksterPrije 6 dana
  • Breaks down every aspect of welding and proceeds to weld with no gloves. Awesome

    Branden WaltzBranden WaltzPrije 6 dana
  • Loud

    Squibly StudiosSquibly StudiosPrije 6 dana
  • Cancer exists so wear long sleeves when ur welding.

    Rob AlthuizenRob AlthuizenPrije 6 dana
  • Body kits in Miata

    Kian CastilloKian CastilloPrije 6 dana
  • Good to see I'm not the anyone that uses pieces of cardboard and a marker.

    Dimitrios FDimitrios FPrije 6 dana
  • It's just not worth deleting the cat in my opinion. Crazy why so many people do that on their daily driver.

    baloo21baloo21Prije 6 dana
  • Ah, the good old test pipe. Something I've done on nearly every Honda I've ever owned, much to my neighbor's dismay. I eventually got smart and just did header back exhausts but before I had money, cat deletes with a ghetto ass test pipe rigged in it's place was the ticket baby. Who cares if it made more power, it sounded like it did and that's all that mattered to 19yr old me.

    RetroCNYRetroCNYPrije 6 dana
  • How the hell do leave hands bare in the beginning!,

    Leonard KraussLeonard KraussPrije 6 dana
  • I need a miata!!!

    B GrB GrPrije 6 dana
  • Musics please n grace yawl

    mistamontiel00mistamontiel00Prije 6 dana
    • graceth***

      mistamontiel00mistamontiel00Prije 6 dana
  • Anyone else just think to themselves “Damn, his hair is fantastic” ?

    miko foinmiko foinPrije 7 dana
    • My man is the hypothetic highly unlikely to have existed son of a more likely fictitious than real god (jesus) of donut.

      Steel prime King of DabbleyooSteel prime King of DabbleyooPrije 8 sati
    • Yes xD

      Maciej SieradzanMaciej SieradzanPrije 3 dana
  • If you add a blow-off valve, you can blow off the excess pressure on the intake side. Cheaper than a new turbo.

    Eric ErnstEric ErnstPrije 7 dana
  • 0:36 "we got a welding machine."

    Eric ErnstEric ErnstPrije 7 dana
  • 13:22 --this explanation has rap meme written all over it. All the moves are moved.

    Oscar TheGrouchOscar TheGrouchPrije 7 dana
  • Grind the wastegate hole. This was always a common mod for Mitsubishi turbos with internal wastegates. The flapper is plenty big enough to cover a larger hole, but the wastegate hole itself wasn't big enough to bypass enough exhaust gas, hence it goes through the turbine itself, increasing your boost. Shouldn't take more than a couple hours or so to pull the turbine housing off and grind that sucker. I saw you were making about 235 and I guessed you'd make at least 250 with the cat bypass. Cat bypasses are no joke. If you're trying to make power at the track, a cat bypass is a no-brainer. PS- I love all of Zach's content. He's great, and he's taught me a lot. Dude knows what the hell he's doing!

    Adam BaldwinAdam BaldwinPrije 7 dana
    • You need a 2 post! Hate to see people with your level of talent still, roughing it, on the concrete!!! Lol

      miko foinmiko foinPrije 7 dana
  • Cool vid!!! It’s hard to make an apples to apples comparison, Jew to mapping, but really, higher exhaust flow when tuned in gonna make more power. Love the Chanel 👌🏻👊🏻

    francis canavanfrancis canavanPrije 7 dana
  • I have a catted bbk xpipe on my mustang and I’m constantly messing with the tune and upstream 02 sensors. Regardless what you run I see a lot of young kids pulling cats off their cars and the fuel trims are off the wall getting 3mpg and running like dog poo pop

    Thunder ConThunder ConPrije 7 dana
  • It’s still a Miata at the end of the day is 4 horsepower worth it? leave your cats on for emissions and smells.

    garrett johnsongarrett johnsonPrije 7 dana
  • For 5 hp just keep the cat, be legal don't pollute that much and be cool at your inspection ...

    Prignon YvesPrignon YvesPrije 7 dana
  • If I wanted to see ads, I wouldn't be paying for youtube premium.

    M GM GPrije 7 dana
  • 7:40 classic , no matter you have equipment we do it the way we like it

    auto mechauto mechPrije 7 dana
  • Add a few drops of oil or wd40 while it cuts. It will help it cut, reduce heat and save you on blades.

    Evan BirminghamEvan BirminghamPrije 7 dana
  • I wonder what this experiments results would be in a N/A engine like an LS or a BMW S62?

    Daryl JosephDaryl JosephPrije 7 dana
  • I bloody hate advertisements

    AD L200AD L200Prije 7 dana