Thread: Hello World !!!
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Old 05-24-2011, 11:16 PM   #2
Registered User
Join Date: May 2011
Location: California
Posts: 24
My Ride: 330i Sports Edition
The original air filter has foam in front of the element, and
the K&N 33-2231 Replacement Air Filter does not have foam
in front of the element. I heard it would run "lean".
Any suggestions
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