Looks like my MAF is finally shafted. If I drive on part throttle the car behaves. As soon as I open the throttle and hit 0.7bar the car starts to missfire like a pig. I'm pretty much resigned to having to replace the unit now but keep getting quotes of £185+ for it. Seems a bit steep. Guy at the local VW parts place says they are very rare to go wrong which kind of goes against what just about everybody else has told me. Is there an alternative part or upgrade that I can use?