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      09-25-2014, 03:48 PM   #6
info@trinityautosport
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Drives: F13 M6
Join Date: Apr 2012
Location: Anaheim, CA

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from RPI's testing (using a dyno dynamics) they stated that they were seeing 388-395 whp as stock; with their GTM exhaust they were seeing 414-420 whp.
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