What is the most restrictive part of the exhaust on a 9 SI????

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05-17-2003, 03:27 PM

TwistedSI

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What is the most restrictive part of the exhaust on a 99 SI????

Is it the cat or muffler? I guess what I am trying to find out is if just an axle back will even really add any power. I would prefer it stock but would like some power gain. Will just a test pipe help my cause? Or is the best bet a cat back whick I really don't want cause I want the car quiet.

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05-17-2003, 03:31 PM

Daniel

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Re: What is the most restrictive part of the exhaust on a 99 SI???? (TwistedSI)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by TwistedSI »</TD></TR><TR><TD CLASS="quote">Is it the cat or muffler? I guess what I am trying to find out is if just an axle back will even really add any power. I would prefer it stock but would like some power gain. Will just a test pipe help my cause? Or is the best bet a cat back whick I really don't want cause I want the car quiet.</TD></TR></TABLE>

rear-section won't add power. I'm environmentally friendly, so i say no to test pipes.

If you want a few extra hp without the noise, use an a'pexi WS exhaust or some other cat-back exhaust that uses a chambered non-straight-through muffler. Well, actually, the GReddy SP is quiet, and it's straight-through, i think. RS*R is good, too, but hard to come by.