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Old 07-01-2009, 02:23 PM   #1
TornThorn
 
Join Date: Jan 2009
Vehicle: 06, Mustang, GT
Location: Ohio
Posts: 26
Default Pypes Violators Axel-back

Installed these about a week ago and have noticed an alarming decrease in acceleration. Arent these supposed to add performance? My exhaust system is stock but for these mufflers.
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