Rush racing Launch control 2 step rev limiter.
It makes your car build boost at the line at the drag strip.
UNFORTUNATELY, a bit of fire comes out of the exhaust. I don't mind though, because, it surprises the starting line guys :P
Anyway, I hope none of you become haters that I removed the vids of my car....I had to do it because a couple gals said they would turn me into the police, even though I did nothing wrong.....not worth the hassle.