I brought mine in and played dumb.. "My engine seems to have a rattle when i let off the throttle.. it might have something to do with the turbos..." Well, they acknowledged that it was wastegate rattle and said they ordered new actuators. They took the whole thing apart, replaced the actuators, and GO FIGURE, the sound didn't go away. So, they replaced both turbos. After having my car for two+ weeks, I got it back and there is no rattle at all. FWIW, my car has 93k miles and is still under CPO. I gladly paid my $50 deductible
