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      02-06-2013, 11:56 AM   #1
DopeM3
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Drives: M3
Join Date: Jun 2012
Location: NH

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Air filter cover question

Hey Guys - Question on this.

I recently purchased a Macht Schnell Air Filter from one of the guys here. My question is: Should I leave the air filter cover off or putting back? Would it do any bad if I leave it off. I'm assuming with it off, it will bring more air in it but I could be wrong.

Any insights?