When you stand on the brake in increases launch rpm, looks like around 1500. Haven't figured out how to set it yet.
I will say it is pretty awesome taking off like that in a 6500 lb truck. I have a C7 Callaway Vette that will do 2.8S 0-60, and the TRX is equally fun at launch. I thought I read somewhere these things can do 3.7S 0-60, trying to figure out how to get there.
This whole horsepower revolution has been awesome, who ever thought we would have sub 4S 0-60 pickups.
I can honestly lay claim that I now don't drive anything less than 700HP