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Old 04-16-2013, 09:54 PM   #2
SoCalThug

 
Drives: 2012 Summit White 1Ls
Join Date: Jan 2012
Location: Diamond Bar, Cali
Posts: 898
15 hp? Wheres the dyno sheet? Those stock mufflers are still really heavy compared to aftermarket systems. Cool vids it seems your mod really woke up the stock mufflers
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