Sorry to get to you after you bought the K&N. Those are about the worst filters in keeping dirt out of your engine. The advertise as a performance filter inmost applications and the reason for that is they are pretty free flowing along with dirt. Years ago their media was tested along with about 7 other filters and they all ways rated at the bottom for dirt retention. Before I knew all this I bought one for a Tahoe 6.5 turbo diesel. One guy said just look thew it at the sun. So I did, and yeah, the sun comes at your eye pretty good right threw the perforated media. A good filter wont let the sun threw. The only half way good K&N is what they had for oiled foam filters. IDK if they still make those but they weren't OEM replacement types.