Reviewed By kerry p (Fort Worth, TX) Reviewed for a 2012 BMW X5 —9/15/2012 2:07 PM
I have used K&N air filters since the 80's on motorcycles. The first for car use was in the late 90's on a 98 expedition. It provided me with an average of 2 extra mpg on a trip to florida. It paid for itself on that trip. I have since used cold air intakes and drop ins for all my vehicles and they really do work!