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      11-01-2008, 10:42 PM   #91
Dymag
NC BMW
 
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Drives: 2013 335is , 6 speed mt
Join Date: Aug 2007
Location: NC

Posts: 308
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Removed filter and added K&N

I removed the charcoal filter when I installed the new K&N and swoop scoops. A nice performance improvement from stock, but very little sound difference. May be a bit early to tell, but I believe that I improved by about 1.0 mpg.


http://www.e90post.com/forums/showth...79#post3572879
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