Hi there, Been reading these forums for a few weeks, just decided to register as I have now got an A3 2.0 TDI Sport. Love the car - absolutely awesome - better than my Golf 1.9 I just got rid of Anyways, basically I wondered if any of you guys could help with this. I've noticed that when I put my foot down there is very often a kind-of delay / lag with the boost from the Turbo. It's kind of like it starts to boost for a second, then goes flat for a few moments then carries on boosting. If this makes sense? Could it be the MAF sensor? Can this be cleaned? Or if not would you recommend a cheap-o one from eBay or the genuine Bosch one? Or could it be something like an injector? I've noticed that when starting up it puffs out what I think is probably faint blue smoke but only for a minute after starting up. Thanks in advance!! Matt Oh- and it's the 8P chassis - 54 reg. Thanks!