hi Cubes! i was going to ask Shaun about wiring the wastegate open, but i forgot...
he said try to keep away from vacuum on the boost-guage, and to try and run it at 0 as much as possible. i found going up steep hills is good for this, also accelerating out of sweeping corners, & sometimes on straight roads i stop then start again. its a bit tricky, but im getting the hang of it