Thread: K&N
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      08-03-2015, 02:34 AM   #5
mitch808
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Drives: 2012 X5 35i
Join Date: Mar 2014
Location: Seattle

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Any issues caused by running a K&N filter are due to over oiling. Nothing more. That being said, the gains are not measurable by moving to one, so stay with stock as others have said.
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