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      09-28-2008, 10:49 PM   #14
ACZakka325i
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Drives: 2 stroke
Join Date: Jul 2005
Location: CT

iTrader: (2)

Whoa whoa whoa, you can tell the difference by just changing the type of filter?

Does this provide documented increases in air flow? I'd consider buying it just for the sound.
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1991 E30 325i