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Old 04-06-2009, 04:50 PM   #2
bluch's Avatar
Drives: 2011 RAM 1500 LARAMIE
Join Date: Mar 2009
Location: Edmonton, AB, CAN
Posts: 3,930
question. what does a GMPP catback exaust do? improve power or sound or both? and how much do they usually cost with installation?? just wonder, because I may be considering that upgrade but I am not that car upgrade savvy as many ppl on here are.

Had to trade in the Camaro for a truck :(, but hopefully I can join the Camaro family again one day
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