Thanks a lot guys....very much appreciated. Have you both had success getting the turbo's/wastegates covered under warranty.
Like most people I'm scared of getting a $2,000+ labor bill if they take everything apart and decide its not sufficient evidence the part(s) are defective.
I can clearly hear the ticking sound and it sounds much higher than in the past. I feel its def defective but not 100% BMW will feel the same.
I have a 2007 e90 335i w/ 42,xxx original miles.