It took me a while to figure this one out, I know others are stumped. There is Sport 1 through Sport 6 on the DCT. I could only get 1-5 at first. You have to turn DSC off in M mode to get S6. If you have it set to M dynamic mode you can only get 1-5. 6 is nasty, it shifts so hard and so fast, but you have to be careful. If you shift mid corner in S6 it will let the back end come around. I have never used launch control, I bought my M3 rather than leasing and don't want to destroy it, but you need to be in S6 if you want to use launch control.
