Ok, my 2000 A4 was spitting and sputtering, I work at a car lot so I asked a few people what could be wrong and i was told my MAF was dirty/bad. I unplugged it and the car ran fine. I cleaned it and plugged it back up and didnt help. replaced it...didnt help. lol The car only runs rough when i plug in the MAF. Any help is greatly appreciate.