SO how do we get dynamic boost control and dynamic timing control for our old UrQ's. Well, off hand I'd say J&S's timing controller could be hooked into a wastegate controller too. If you open the regulated side of the the Schrappnel Knobben_tm when the alert reaches a certain level, you could do it very easily. Oh, by the way I found a 12V pressure switch at the surplusstore at lunch. :-) paul t-