I've got the Wavetrac DSG installed in my car. I believe it works as I track the car. I do still get wheel spin on a track in two specific instances -- after a corner where the road I don't think is even (you can feel the car jerk a ton), and on a straight going 200 km/h at WOT. Unfortunately, I don't have experience enough with how it should work, but I've been told by people who have ridden (not driven in my car) that it does work.