So long story short, had a blown DV, put on a Forge, it got stuck and stopped working, they sent me a new one, that one didn't work at all. So now I have no boost, car runs like crap, so I go to VW. They say they "THINK" I might have a blown turbo, but to try another factory DV first. Forge sends me one for free, I put it on the car, still no boost. I want to take the car for a second opinion before I do anything, but how can I tell FOR SURE that the turbo is blown? I really need help guys!