Thread: Best Air filters ( stock type ) for Performance

I installed the drop in K&N air filter into my 3.8 when it had less then 400 miles on it. I didnt notice any major gains in power but it might be do to the lack of seat time with the car before hand. Although it did seem to have a slight improvement on gas mileage. Either way it will improve airflow no matter what and you cant beat a million mile lifetime warranty. When I took out the stock filter I was surprised by how much thinner the K&N unit was, probably have the thickness. To that effect it has to be an improvement to some effect, definitely worth the $50 or so. I couldn't find the filter at any local auto stores so I ordered mine from genracer.com or you could try genesistuners.com.