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help with exhaust systems

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Old Feb 12, 2005 | 05:54 PM
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  #11  
klamslam's Avatar
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Joined: Jan 2005
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Default RE: help with exhaust systems
Kappa,

is the reason for not going over 2.5" because there wouldn't be enough back pressure?
 
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Old Feb 12, 2005 | 06:56 PM
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  #12  
Kappa22's Avatar
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Default RE: help with exhaust systems
Yeah, that's right. However, most people say that too little backpressure reduces horsepower, but this is not the case. It simply moves it up higher in the rpm spectrum.
 
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Old Feb 13, 2005 | 12:31 AM
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sacicons's Avatar
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Default RE: help with exhaust systems
No, its not a lack of backpressure. thats an old musclecar myth. backpressure is BAD, no matter what. the bigger piping hurts power because of the exhaust velocity. ive got a writeup on it here somewhere. heres a new sticky.
 
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Old Feb 13, 2005 | 12:12 PM
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D16z6's Avatar
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From: Fort Smith, Arkansas
Default RE: help with exhaust systems
like kappa said..cat back is from the cat converter back..full exhaust is from manifold back..

So a cat back is better and produces more hp?
 
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Old Feb 13, 2005 | 12:21 PM
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Default RE: help with exhaust systems
basically, a cat-back is part of the whole system, the system also includes the cat and the header. but a cat-back is better than just a muffler.
 
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