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K&N Air Filters Part #33-2255 Customer Reviews
12 Customer Reviews
Reviewed by Harmon M G (Jupiter, FL) Reviewed for a 2006 BMW X5 — Nov 19, 2009 7:23 AM
We recently received our K&N airfilter for a 2006 BMW X5 3.0.Installation was very straightforward. We've only had it for a short time so we can't say anything yet about fuel mileage. So far, we are pleased.
Reviewed by Dave K (Springfield, MO) Reviewed for a 2003 — Jan 31, 2007 4:56 AM
The OEM filter installed by BMW service was mis aligned. A small gap was present when the cover was removed. The filter initially had no difference. After a few hours, the computer adjusted the air/fuel mixture.The computer stated a 1-2 MPG increase. Time will tell.
Reviewed by Dennis D (Doylestown, PA) Reviewed for a 2004 — Jul 04, 2006 5:40 AM
These filters seem to help the motors run more efficiently. I have them in a 2003 BMW Z4, a 2001 BMW X5 & a 2005 Chevy Silverado. My Silverado picked up about 1-2 mpg on it's first tank of gas with the filter. I haven't had to refuel the BMW's since the filters were installed. Performance also seems better.
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- Part #:33-2255