How exhaust affects power output
it's all about backpressure...mufflers will create more backpressure and make your car feel more torquey and faster, but if you just have straight pipes/cutouts, you will gain more HP in the upper RPM's, but it may feel slower due to the lack of that torquey feel
and even with a cutout, some exhaust gases still go through the rest of exhaust system...it doesn't divert 100% of your exhaust
and even with a cutout, some exhaust gases still go through the rest of exhaust system...it doesn't divert 100% of your exhaust
Originally Posted by iamsickofitall
it's all about backpressure...mufflers will create more backpressure and make your car feel more torquey and faster, but if you just have straight pipes/cutouts, you will gain more HP in the upper RPM's, but it may feel slower due to the lack of that torquey feel
and even with a cutout, some exhaust gases still go through the rest of exhaust system...it doesn't divert 100% of your exhaust
and even with a cutout, some exhaust gases still go through the rest of exhaust system...it doesn't divert 100% of your exhaust
Tech Resident
Joined: Jan 2006
Posts: 5,117
Likes: 3
From: Philly
you want 3 things with an exhaust setup:
1.) minimal backpressure. this yields the most hp.
2.) as high flow possible that the engine needs without losing torque
3.) the highest exhaust velocity attainable without sacrificing the minimum flow area the engine needs. this is produced by scavenging effects (x-pipe, y-pipe, h-pipe).
mufflers only restrict, they don't help. it's the piping that makes you faster. how to achieve the perfect setup is beyond you and me.
1.) minimal backpressure. this yields the most hp.
2.) as high flow possible that the engine needs without losing torque
3.) the highest exhaust velocity attainable without sacrificing the minimum flow area the engine needs. this is produced by scavenging effects (x-pipe, y-pipe, h-pipe).
mufflers only restrict, they don't help. it's the piping that makes you faster. how to achieve the perfect setup is beyond you and me.
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TECH Apprentice
Joined: Dec 2005
Posts: 366
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lolol you'll get backpressure no matter what, 0 back pressure would be no exhaust manifolds AT ALL, straight headers still has backpressure, jsut minimal...which is why people do it...i dont think veterans at a track runnig straight headers would be to happy ahbout your statement of it being a myth....
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TECH Fanatic
Joined: Nov 2001
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From: cyberspace
Originally Posted by Camaro94SS
lolol you'll get backpressure no matter what, 0 back pressure would be no exhaust manifolds AT ALL, straight headers still has backpressure, jsut minimal...which is why people do it...i dont think veterans at a track runnig straight headers would be to happy ahbout your statement of it being a myth....
hence open headers.
When you go with less backpressure, you will lose low end but gain top end that's how it works, same thing with a cam, sacrifice low end a little for more top end. Something has to give.