waste of money. i actually dynoed it back to back. stock filter first then K&N. actually lost 2hp.

as for the keeping the same car a long time. I can get my stock paper filter for $15. Which lasts 3 years or 60K miles. K&N drop in for my car was $45. That's 180K miles or 9 years. Plus you have to spend money for the filter recharger kit every 50K miles at $15/kit.

Math didn't work out for me.