Avalanche exhaust
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Avalanche exhaust
I'm looking for near stock volume exhaust at idle & cruise for the 09 Avy. Looking to handle 600-800 rwhp. Avy has factory 4 link plus Autoride (airbags) so it's TIGHT under there. ARH 1 7/8 with cats. Any ideas or suggestions are welcomed. Gotta do something because back pressure is building boost but not power. Besides I keep blowing header gaskets.
Last edited by Lucille; 04-24-2012 at 11:19 PM.
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