How to Clean MAF As far as high performence filters, I don't know, but I think they wouldn't make too much of a difference. Fram ones from Walmart run between $5-$7. Try the MAF cleaning and filter replacement, and even add some fuel injector cleaner/gasoline water remover to your tank, you could have dirty injectors or water in your gas. For only about $1, it is worth a try. Good luck.