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K&N Air Filters Part #33-2149 Customer Reviews
14 Customer Reviews
Reviewed by Ed W (Deltona, FL) Reviewed for a 2006 BMW X5 — Nov 29, 2011 4:00 AM
Reviewed by Omar A (Glendale Heights, IL) Reviewed for a 2000 BMW X5 — Aug 19, 2009 2:14 PM
This is the third K&N filter I've used on my cars in the last three years (an Altima and a BMW X5). As in the previous cars, I have noticed smoother engine performance vs. a clean paper filter. Not a big difference in mpg- maybe 1/2 mpg, but every little bit helps.
Reviewed by Edgar K (Somers, MT) — Sep 24, 2008 7:04 AM
Reviewed by Louis E (York, PA) — May 22, 2008 7:30 AM
I have K&N filters in three diiferent vehicles including a motorcycle and I' fairly happy. The only one I really have issues with is the one I installed in my Ford F350 deisel. After driving up along incline while being moderately on the throttle the engine makes a strange sound. It does seem to do a good job though.