Anyone know where I can get an air filter for my AEM CAI cheap? Will a K&N fit? I have the one that came with it but I wanna have an extra one since I want to wash the one i got. It's been on for about a year or more now so it needs a cleaning bad. I use my car a lot so just want to be able to swap the dirty one, put in the clean one instead of having to wait out till the dirty one gets dried b4 i can drive the car. Does AEM sell just the filter..anyone know their homepage? Thanx Louis