What is the fastest and best way to clean a K&N air filter?
Lucky you, I had an issue with my dealership where they diagnose a leak vacuum leak because I had the FIPK installed. They said they needed for me to reinstall the factory air box before they would look at it. I said forget it and finally figured out what the problem was on my own. I did debate it with them but it went no where. So, yes they can give you problems, but if you just have the drop in type like my wife has in her Impala then there should be no problem at all.Originally posted by Sapperstang
Had one in every car i've owned. Dealer should not say a word about it. I never had an issue with the dealer while using one. They can muck up your maf sensor but its not going to ruin it. I clean the maf wires every now and then anyways just in case.