09 gmc 5.3

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Aug 15, 2009 | 04:17 PM

cguinn

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09 gmc 5.3

I just purchased a 2009 GMC sierra 5.3, I put cat back exhaust, cold air intake, looking for more hp, anyone have any ideas on a top end package??

Aug 15, 2009 | 04:27 PM

Ad1

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Joined: Mar 2009

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From: UAE, AD

u need a custom tune and headers to have most Hp from bolt ons

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