They forgot to put it on my vr im sure! Mine spins on grass at any revs! and mud! Back when they were new and a mate had a black 95 hiline he said it only works when you are turning! last time it snowed i was spinning all around the feild i drove it to!! did have allm,ost all the revs on though! and was happy that if there is a tc system that day it was useless!! lol