Doesnt the waste gate crack open before target boost to prevent overboosting? Ideally you should leave the waste gate closed to the last possible moment as target boost is reached right?
The vacuum boost control system could use some redesigning in my opinion. A while back i was in discussion with Moore Performance on a few ideas i had, but i woud have to put money into it that i dont have to see if it worked.
One day i plan on revisiting it, but in mean time i wouldnt be suprised if someone doesnt beat me to it.