Thread: GM performance headers and exhaust: what kind of performance increase?
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Old 05-15-2009, 08:33 AM   #22
Shocker
Future 5th Gen Owner
 
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Drives: 2004 Pontiac GTO
Join Date: May 2009
Location: Westchester,IL
Posts: 34
shorties has stock mids

LT's catless mids
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For now a lightly modded 04 GTO
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