My BTR is only at ~420hp (exhaust, computer).
This tune is by no means finished, but the car is much more drivable to me...
Stage 3 weight reduction
Full exhaust
6spd close ratio box.
LSD at 16/18/50
ride 0, 0
spring 6.9, 8.2
extension 4, 5
compression 6, 7
sway 6, 5
camber 1, 4
toe 0, 0.5
brakes 5, 3.
Good luck.