Quote:
Originally posted by whiteracer
if i got a cat back exhaust system, would i have to get rid of the muffler i have right now? how much more of an increase in hp would i get? how much does it cost?
what about cams?
i dont want to spend too much, and i might be going to the shop later today so any more answers right now would help.
Do sport headers do anything but look good?
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A full cat-back exhaust replaces you're current exhaust sustem right up to the catalytic converter, hence the name "cat-back." Depending on which one you get, like an A'PEXi or DC Sports or GReddy, you should see some minimal HP increases, maybe by as much as 5hp. You won't see phenominal gains from one unless you have some tuned cams, and a nice header to hook up to it, oh and no cat converter too of course since those really hurt power performance.
I have an A'PEXi World Sport cat-back exhaust on my car, and I love it! A'PEXi says it'll increase mid end to high end responsiveness and power, and I have noticed those increases, not as much as I might if I had a header, but it's is better than stock. System set me back only $385.
A header WILL help you out, but not very much unless you have a good exhaust system to go along with it, and you're fuel system upgraded (intake manifold, cam upgrade, larger fuel rail, larger injectors...) Everything is relative to eachother when comes to under hood stuff.