Machines | Do Catback Exhausts Increase Horsepower? (With Proof)

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1. I wish someone would just simply do a before and after dyno on it like a video I made on my channel for a supercharger.
2. +Engineering Explained this would be awesome for a remake using your OBD monitor, you know the thing that you have been using for your reviews? :D
3. LONG TUBE HEADERS, THEN CATBACK,cast iron manifold with catback haha
4. catback sounds much better tho
5. does resonator delete cause power loss? Can you do a video for that please
6. do you have crab's. you keep scratching!!!😂😂😂😂😂
7. since the back pressure air and fumes exist faster a flow more freely i belive straight pipes "in some cases can" give you more power
8. thanks a lot sir you answered all of my questions you're a master mechanic!
9. All I can say is the numbers I have. EP3 with stock K24A2. Stock header, test pipe, tanabe midpipe (2.36") = 180 WHP/170. Ktuned race header and Invidia Q300 = 210 WHP/190 WTQ. Dyno and Tune on both.
10. Too bad dyno testing is so expensive, the power and torque gains would be nice to know.... nvm you commented on that at the end.
11. Subscribed for the integra have an 97 LS myself
12. Wow what a waste of money hardly any improvement rather keep stock.
13. @Engineering Explained I dont know if someone else mentioned that before but it is an importand note. The percentage of power increase is not the right one. As you modify the engine more by the time to get a better horsepower output than the stock 140hp,a part of the power gain will be exhaust gain,as the exhaust's inner diameter will be more relevant and suitable for the engine's power output. Correct me if Im wrong,we are here to learn! :)
14. Think of an exhaust system as a multiplier. (Example, not actual stats)
    Exhaust = 2%
    Exhaust + Intake = 5%
    Exhaust + Intake + Tune = 10%
    An exhaust alone will do nearly nothing by itself, same for an intake, but both of them together multiply each others performance. Every engine will have different results along with different stock parts to work with depending on model.
    
    If you want to greatly increase horsepower, your best bet is to research the best Exhaust + Intake + Tune combo for your engine.
    
    Currently im looking for a combo that will bring a 300hp 05'-09' Mustang GT to around <420hp that will cost less than a $6k supercharger/turbo kit. (My 420hp 2013 GT was stolen, so I need something that will have the same, or more power.)
15. someone please explain catback
16. no they don't, stickers do
17. wouldn't you need to swap the header and cat to get the performance gains? since the flow through any pipe system will depend on the flow bottleneck.
    
    https://www.khanacademy.org/science/physics/fluids/fluid-dynamics/v/fluids-part-7
    
    I love the experimental analysis but I'd love to also see the actual physics behind why you saw gains.
18. What about catback system with a muffler silencer? Does it decrease performance?  I feel like adding the silencer the acceleration feels more responsive.
19. From various videos I've seen regarding exhausts and air intake systems, it seems like just adding a more free flowing panel filter and just replacing the stock muffler with a better flowing one will have the same effect has the latter while saving a ton of money. If a vehicle already has say 2.25 inch piping or better depending on the power it makes, then one would assume that it is designed for that diameter of piping and just making the flow better will give you a couple horse power while giving you a nicer sound and maybe a couple mpgs of you drive moderately. Would you consider this accurate?
20. proper title should be "can a catback exhaust increase hp" you are testing one setup