on subenco when you are in the tunnel that travels upwards use a turbo into Br that kills the A.I its a big time saver

oh and on first bump push down your nose otherwise the BR is a waste of time..

and the last bend as you head towards the big tunnel..well i never bother with the BR i just focus on hitting the speed pad so i can get the double BR in the tunnel on the way down.but if your hot you can do all 3. but for elite you wont need that much speed.