Okay, I just went to my car and tried this sequence. I successfully got into launch control mode. After a few trial and error attempts though, I discovered the following:
1) you do not need to put the shifter into manual mode
2) you do not need to put the engine into Sport or Sport+ mode…
launch control does these things for you! So the sequence (at least on my '15 M6GC) is the following:
1) DSC off
2) soft brake pressure
3) gear shifter forward
Vehicle then goes into manual, sport+ mode. You can then take your foot off the brake and hammer down the pedal. It stays in launch mode until you let off the shifter. What I don't know is if you're suppose keep forward on the shifter when you launch. Anyone know?? I did not launch it because I was in the garage and would've ended up in our guest bedroom.
