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      11-21-2012, 02:28 PM   #15
Z K
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Drives: E90 M3, MK6 GLI
Join Date: Jul 2011
Location: San Francisco

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Using an oiled air filter on the E9x M3 doesn't make a difference as it uses a MAP sensor. There is no MAF sensor to foul. I would never use a oiled filter on an MAF equipped car.