Just had a lot of work done on my S3 including new piston rings, rebuilt head and new turbo
Got it home yesterday and its idling funny. Best way of describing it is as if its got a set of harsh cams on it!
It won't settle down and idle normally its constantly up and down and it seems to be hunting for air. When driving a long out of boost the boost gauge is saying 20psi of vac however on idle its up and down too around 10 and 0
I know its got a maf sensor fault could this be its problem or should I be looking for split pipes etc?