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Old 04-07-2010, 11:13 AM   #9
camaro1

 
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Drives: 550+RWHP 2010 camaro
Join Date: Sep 2007
Location: wisconsin
Posts: 1,588
put in an x-pipe where the large resonator was,,, when i still had factory mufflers on mine and i took out the resonator and had a custom x-pipe made the car ran way better.

that factory resonator actually acts like a very inefficient h-pipe ,, if you look inside it, both banks come together then exit, so when you straight piped it you lost all the h-pipe/x-pipe exhaust effect
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