I recently removed my K&N to clean and oil it and put a new stock filter in for the meantime. I really can't tell the difference yet. Maybe when I put the K&n back in. If I don't, I will just leave the stock filter in.

I have read enough posts that say K&N's increase air flow, but don't filter well. That could explain the filthy condition of my throttle body and ISC, as well as some of the idling problems that went away after I cleaned both.

My 2 cents FWIW, all learned here in these forums. <img src="/forums/images/graemlins/cheers.gif" alt="" /> <img src="/forums/images/graemlins/kewl.gif" alt="" /> <img src="/forums/images/graemlins/wink.gif" alt="" />