I fink iv sorted the problem wiv my car holdin back. I got a pipercross airfilter a little while ago off one of my mates, but what he didnt tell me is that when he took it off his car it was full of oil. Put my old one back on and put some carb cleaner through it and seems to be gettin better every time i drive her, Thank god. My old airfilter is a lot louder aswel, sounds well gd.