what up....just curious if any other 2.0 Golfs have the check engine light coming on and going off on occasion? My friend has the same thing happening with his...i think partly the problem was the intake mess'in up the MAS-(mass airflow sensor) readings. Or i'm thinking its some other sensor gone bad....maybe Oxygen sensor...to many damn sensors! its no big deal...at least yet..i'm not concerned. Also....any 2.0's out there ever gut their cats? or get a high-flow cat- if so does it do anything performance wise? thanks alot.