K&N Air filter questions

[b_hickman11]

Originally Posted by bronsin

The stock air filter is really an excellent design. Its 99% efficient at removing dirt compared to the KN's 95%. My last one cost $13. Thats $40 for 90k miles of superior protection. At 90k miles Im buying a new car. I just dont see the cost/benefit being in the KNs favor. Maybe if I lived in Alaska on a dirt road and serviced the AF every 5k miles.

So you think you are still getting 99% at 90,000 miles? My guess is that it would be 50% or lower. By then I could have already cleaned my K&N(several times) and still have it 95% or more.