I think of all the tracks, pmar project is best taken with the counter braking technique. I know that right up to the tunnel I can usually go at full speed with only light tapping on the airbrakes opposite to the direction of the curve. After the tunnel I use very short jabs of left+right brakes at the same time to navigate the hairpins. After that it isn't hard even at rapier speed, which is all I play at. What you do is engage both airbrakes very hard for maybe 1 second, which will cause the craft to lose speed very quickly, even become unsettled a bit, and then turn in. I do the same on megamall in order to complete the corkscrew without hitting the edges or bottoming out. Just one jab right before is enough, and I've done a 32.5s (assegai) lap on megamall even with this maybe wasteful brake use.