Hi, I have the RS3..the launch control does work on my car as I have tried it before and the 0 to 100 in 4.6 sec is true but of recent I just cant seem to get the launch right again.
It doesn't hold the rev at 3200 and has too much of a lag before it goes off the line.
Does the engine, oil, etc., have to be at an optimum temperature or should it launch whenever where ever?