I have just replaced the MAF on my 2001 Tiptronic 2.5V6 A6. I can not beleive the difference, its great, the traction light even flashes on now and it has never done that before. The only thing I have noticed is that when you accelerate hard there is a fair amount of diesel smoke from the exhaust, it is only on when you first accelerate and doesn't continue for long. The question is, is this fairly normal? Ta.