Out of curiosity - Why do you recommend not using a K and N air filter? I am not a big "gear head engine guy" so I am very much a novice on a lot of that stuff, however I ran a K and N on my 96 Tacoma in highschool and college and never had any issues in the 90k miles I put on it during that time.
The only thing I have every heard was if you over oil them, it can set off your mass air flow sensor?
We are running an AFE dry filter on my wives 4runner.
If you live in Idaho, that K&N is going to do harsh things to that engine. I know, I'm from Nevada, same same environments... The K&N lets in more particulates and doesn't filtrate nearly as good as the stock box filter.
