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      01-17-2013, 11:20 PM   #4
Flipwit
Private First Class
 
Drives: 2012 135i
Join Date: Sep 2011
Location: San Francisco

Posts: 170
iTrader: (2)

The Butt dyno felt the difference, honestly the power delivery came maybe a little sooner. The sound though... roll those windows down and it is just music, sweet sweet turbocharged music! You will get a larger benefit as you have the down pipe and I do not. Pull the trigger and don't look back
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