thats a good point about the wastegate, I hadn't thought of. Granted my turbo has no wastegate (doesnt need it, its a VATN) however im sure i can rig it to bleed off some boost at high rpms without worrying abot melting my engine.
Heres a good shot of the actuator that controls the turbo geometry:
thanks for that tidbit of knowledge MrSelfDestruct, i flat out did not think of that.