I dont have the silinoid hooked up.. so its not that. I checked one of the spare ones i had lying around to get an idea of how it worked, and sure enuf, add some air to the line arm extends. i try it on the one in question, and no arm extends, i hear lots of air. I opend it up, and it looks like the diaphragm may be torn, its not all the way thru, but the silicone is torn, the mesh like material on the back side is not. or forgin materiel is preventing a good seal.

It is a hahn adjustable waste gate.

you can always trust a dishonest man to be dishonest, honestly, its the honest ones you need to look out for. you never know when they will do something..stupid