I have know clue of what he changed. but my car runs a lot better now I also went back to stock filter also
I have seen dyno results where the stock filter did exactly the same as the K&N. There was literally no power difference. Main reason I want this??? I hate that damn flexable piece at the airbox because its a pain to clean lol. Maybe ill pick one up and give Mike a Call also. Maybe I will send the tube to get hydro dipped and knock off the logo!