What is power braking?
I can't go to 3500 RPMs with an ATX. ATXs have rev limiters which stop it at around 2800, even if you floor it while still holding the brake. The car wont move, but it wont rev past a certain point either. When I try to launch when doing this, it stalls it a bit. Thus far, I've found that 2000 rpms is the sweet spot (but I havent tried anything lower)