K&n Air Filter - BMW Forum

Red 330CiC · 02-10-2005, 01:27 PM

I'm thinking about buying a K&N filter for my 330CiC - just the panel filter (stock replacement). There is no doubt that the K&N will flow more air into the motor, but do you get a noticable gain in power? I have heard that the panel filter from K&N will give you nearly the gains seen for a cone type air filter (cold air intake). Thoughts?

Hootie361 · 02-10-2005, 01:41 PM

you won't see gains that large. if you're talking about the K&N filter replacement for your stock air intake, you'll see a measely 1-2 hp gain. however, the filters can be cleaned indefinitely and do allow more air in than the alternatives from bosch and mann. a CAI with a software upgrade usually nets a car approx. +20hp. a pulley kit will bring that total to approx. +30hp.