Although I haven't got an Edge Insight or boost gauge on it yet, I am sure it is building boost. A truck this heavy wouldn't accelerate nearly as well as mine does without it. As for no wastegate - I wondered about that, but that was their statement. I haven't been overly impressed with the knowledge at the local dealership. On the first visit I suggested using their stethoscope to track the noise down and that apparently didn't happen until this last trip when they said it was the "wastegate". If the new turbo doesn't do it I am going to strongly suggest we start a buy back/get me a new one with the same color and options.