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      10-16-2010, 09:29 AM   #14
dtc100
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Drives: 2011 E90 328i 6AT non-sport
Join Date: Sep 2010
Location: Norcal

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Quote:
Originally Posted by c_jeong89 View Post
there is a diy guide in the diy section, but all u really need to do is unscrew the intake/MAF sensor and take a utility knife/dremel/something to cut the filter out and sand the edges down to smooth it out. then just make sure u clean up everything.
Ok thanks did find that DIY thread, so this is a permanent layer of air restrictive device just for the US?
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