Bad Idle

    Hi Guys
    I have gone crazy and fitting my car with an S3 engine, worked fine in the begining after the remap but now it has a really bad idle and sometimes shutting off



    any idea what could it be? :cursing:

    Check or better exchange your crankcase-ventilation-valve immediately, mounted on valve-cover with 4 screws. It´s a common problem. :wink:
    You also get boost pressure in crankcase with broken ventilation valve, engine will leak oil.