kevinchung

thinking to buy a K & N air filter, anybody is using it? Will the car go better?

Buellwinkle

Go better than what? It depends, my dyno testing showed that unless you have siginificant other mods like a pulley kit on a C230, exhaust or something that would required more breathing their not aren't any gains but I lost .1 HP on the dyno with K&N, ITG got me 1 HP. With a pulley kit on my car I got an addition 3 HP with either filter. No filter gets close to a 5.9 HP gain.