Ive be had a fault on going for a while now. I've been led to believe it was the PCV valve. I've been getting the revs flutter after acceleration and going into neutral (see the video). I tested the PCV by removing the oil cap whilst idling and up to temp, you could clearly hear sucking and the car starting to miss.
Ive vey just replaced the PCV for the new revision R version and changed the gasket. The car is exactly the same as before. My engine code is BHZ if that helps.
Here re is a video of the rev needle showing how its hunting after accelerating:
Audi S3 8P fault? - YouTube
all help is appreciated.