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Just how loud??

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Old 09-05-03, 12:35 PM
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Just how loud??

If I replace the stock exhaust manifold and 2 pre-cats with a header that connects to the stock cat, just how much louder will it be. It still has the stock cat and cat-back.
Old 09-05-03, 12:39 PM
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With the stock cat and cat-back, it shouldnt be too loud at all...
Old 09-05-03, 12:46 PM
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cool, thanx

How much will leaving the cat in lower the gain I'll get? I've tried searching this and all I get is full setups that remove the cat entirely.

Last edited by Chimeron; 09-05-03 at 12:58 PM.
Old 09-05-03, 02:34 PM
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Well Im using a high-flow cat, and in using a good high flow cat, the difference between it and a midpipe is almost negligable. Im sure the stock cat will rob some power... as to how much I can't really say.
Old 09-05-03, 02:36 PM
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Both ( cat or presilencer) have about the same muffling effect.

The header is the big deal for an NA.
If the cat's in good shape, it's a small loss compared to the header's big gain.
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