... Invented a method of controlling one properly yet? There are a great many in the scrap yards but most people, myself included, don't know how to make it work. From what I read, the boost controlled ones aren't ideal, I have also seen a rather agricultural looking setup on a VW forum involving linkages and springs.
I think there is a gap in the market for a stand alone box of tricks and a couple of sensors, (boost and throttle position maybe?) to control an N75 type vacuum controller to allow using a standard vac actuator. Being a bear of little brain, such things are beyond me, but not beyond the capabilities of some on here.
What say y'all?