Since the weather has been cold I've noticed my S3 appears to give off a lot of vapor from the exhaust. Like when a cars first started in the cold but it seems to stay even when upto temp. Oil and coolant appear fine no contamination or excessive use since I've owned the car. Pretty sure it isn't smoke and doesn't get worse when I put my foot down mostly notice it when idling traffic etc. Only issue I know of with the car is a slight blip when idling I don't believe the two are related. I'm hoping to track down the idle problem now I've got Vagcom so any tips on how to go about this are much appreciated as it's all new to me!