Reviewed By Matthew L (Ruther Glen, VA) Reviewed for a 2000 Mazda Protege —5/30/2012 7:31 AM
I was a traditional cheap air filter buyer until I installed my K&N filter. Everybody always said they were worth the money but I wasn't ready to commit to dishing out the extra dough. Now I'm kicking myself for not doing it sooner! The difference was noticable right away in my 1.6l Protege and my gas mileage has gone from around 320 miles per tank to 340 consistantly. No dyno to check HP gain but the high end saw the change, dropping the RPM from 4.2k@80mph to 3.5k. As for low end I can't honestly say I can't feel a difference but what can you expect from such a small car.