Bahaha...
I couldn't resist either, nice cool night minimal traffic. Boosted it up to .8bar no troubles. Looks friggin cool at night.
Na, the duty cycle is purely to do with boost control by controlling the duration the solenoid is open and bleeding off air. It has no effect on the rate of spooling, the higher the DC the more air is getting bleed off ie. tricking the wastegate actuator into running more boost.