Replace drag on sprint (Need for Speed: Most Wanted (2005))

How to replace the race in drag racing on a normal sprint on the same track where that change in vltedit, does anyone know? And anyway does it make sense? Annoyed by this stupid drag racing riding on rails and scripted traffic. They want to replace the normal sprint and do to the engine could break down, car break. But on the other hand you want to and accurate shifting also affects how you go, this is in my opinion not in the normal races or in desert drag racing. Here in the Underground of drag I like.