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Old 01-31-2010, 05:59 PM   #37 (permalink)
mpp9
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Join Date: Apr 2009
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Is it just me or is 260 whp with intake test pipes and catback even on a mustang dyno crazy low? Id imagine the gain from the tune is in large part from correcting what you apparently didnt gain from breather mods. Nonetheless assuming u were at 240 whp stock thats still a 50 whp gain if ur at 290 now with tune.
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