Discussion and questions related to the course Launch Control
How would you be able to properly set up ground speed launch control on an AWD vehicle?
Unfortunately you can't since there is no reference for ground speed. This is discussed in the body of the course. It's possible to potentially use a high speed (50Hz minimum) GPS sensor but there aren't too many ECUs that are compatible with this option for a launch control strategy unfortunately.
As Andre said use GPS or dont use speed based and use a time based strategy from your launch switch release.