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      12-07-2011, 01:11 PM   #12
disapr
drop a gear and...
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Drives: 2010 M3
Join Date: Mar 2011
Location: Houston, TX

iTrader: (4)

Quote:
Originally Posted by houstonT View Post
What type of whp gain did you see with the exhaust and tune on 93?
Peter
I picked up about 40 rwhp with the combo - The power and smoothness was very noticeable