View Single Post
      01-06-2012, 12:42 AM   #4
Beyu
Lieutenant
United_States
13
Rep
579
Posts

Drives: 135i
Join Date: Feb 2011
Location: WA

iTrader: (0)

Check out this thread

http://x3.xbimmers.com/forums/showth...ighlight=k%26n

It's not recommended that you change out the OEM filter for a K&N one or any aftermarket ones since BMW could potentially void your warranty.
Appreciate 0