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      01-29-2013, 05:36 PM   #55
Jeff@TopGearSolutions
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Drives: C6 Z06, 09 335i, 10 335xi
Join Date: Dec 2008
Location: www.TopGearSolutions.com

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Quote:
Originally Posted by rays 335i View Post
not to hijack but could someone point me to a dyno comparison of stock vs. aftermarket dps?i have read more /better turbo spooling ,quicker response, and the hp gains are comparable to a good e85 mix. don't get me wrong these are all good improvements but would like to see independent dyno .before and after.
There's really no point in getting downpipes on a stock vehicle. You will find nearly 60WHP just getting a tune and keeping everything else stock.

Downpipes mated with a tune can yield about 20WHP on top of the gains from the tune. (maybe even a little more).
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