Started noticing it more this year since it's been colder more often than last... having some issues with cold start on A3 3.2. When it's very cold out (-15C and below), car seems to want to stall but catches itself when starting. Revs would go to 200rpm for a second or two before going back up to 800rpm. Once at 800rpm, it's stable, no bouncing around, doesn't shake, no misfires or codes. No issues when car is warm or outdoor temperature is warmer. Showed mechanic and thinks it maybe engine coolant temperature sensor getting wrong info causing wrong air/fluel mix at statup. Cheap fix if it is indeed the issue. Wonder what else can be. Pump primes, new battery, maybe MAF suggested by Lunch Box. Dirty injectors (only use Vpower all the time). Posted link on youtube:
https://www.youtube.com/watch?v=Jpzg86ravYQ