gmmg exhaust
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Joined: Nov 2008
Posts: 67
From: everett , wa
gmmg exhaust
does anyone have the gmmg exhaust? i had the loudmouth, and i was thinking of true dual. but i was thinking of going with the gmmg. does it sound good? any horsepower changes?
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Joined: Sep 2008
Posts: 65
From: Foley,Al
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