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      04-04-2013, 08:56 AM   #77
jawwadh
Addicted to Speed.
 
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Drives: 08 e90 m3, 08 tl-S, 13 328xi
Join Date: Aug 2011
Location: Columbus, Chicago.

Posts: 616
iTrader: (3)

I have a KN, its awesome, no vibrations. Sounds a bit better. The car felt slightly more responsive but then again I did have a dirty stock filter. I bought it when Advanced auto had a sale and it was 55 bucks.
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