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Camaro V8 LS3 / L99 Engine, Exhaust, and Bolt-Ons Bolt-Ons | Intakes | Exhaust

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Old 11-06-2011, 11:17 PM   #1
doubletrouble
 
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What is what on the stock exhaust system

Wondering what is what on the stock exhaust, starting at the front? Exhaust manifold, resonators then? cats mufflers? Thanks
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Old 11-06-2011, 11:19 PM   #2
The Stig
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manifolds --> front cats --> rear cats --> H pipe (or if L99 a resonator) --> mufflers --> tips
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Old 11-06-2011, 11:27 PM   #3
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he didnt make it very clear but in the ss manual there are separate h pipe and resonators, and for auto the h pipe is inside the massive resonators
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Old 11-06-2011, 11:39 PM   #4
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sound restriction hehe
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Old 11-06-2011, 11:42 PM   #5
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Sorry it's a L99
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Old 11-07-2011, 12:04 AM   #6
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Too bad most of the restriction is in the headers and cats.... replacing everything after that doesnt really do much, and only changes sound if you don't do anything forward of the res.
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Old 11-07-2011, 07:39 AM   #7
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Quote:
Originally Posted by Jrichards73 View Post
Too bad most of the restriction is in the headers and cats.... replacing everything after that doesnt really do much, and only changes sound if you don't do anything forward of the res.
+1. Replacing just the cats can net you up to 20HP. I replaced my exhaust from the cats back and zilch. Better sound for sure.
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