The air filters that FastLane sells are disposable paper filters. The K&N is made of a cotton soaked with red oil and is reusable. I have a K&N which I added about a year ago (if not more) and I seem to recall it making a difference. I really don't remember though and I don't have an extra paper filter to use and compare to. At $50 something, it wasn't a bad buy but you'll have to find it somewhere other than FastLane online, or maybe at a local parts shop. If you're looking into reusable filters, also take a look at Amsoil's foam air filter at their website (
www.amsoil.com). I've heard some pretty good things about that one too.
There are, however, many people here who will tell you that the K&N is a waste of money and OEM paper is best. I would search the archieves for one of the threads with this debate and then you can decide for yourself. Good luck.
Alex