yea i found the answer in the forum
This special function is truly unique and makes for pure
maximum-acceleration excitement. Deactivate the DSC, choose the S6
driving program and, while the car is still stationary, tip the
selector lever forward and hold it there. Press the accelerator
fully down. The engine speed is brought up to 1,800 rpm (3,500 rpm
for euro models). Then just let go of the select lever. You will
take off with minimum if any wheel spin. (I have tried it once in
my car. It's AMAZING!! I did not get any wheel spin).
