Originally Posted by PR3CI5N
When you have a rattle like this the first thing that will be replaced is the wastegate actuators. If your wastegates need replacing then BMW will have to replace the turbos which they don't like doing until they are 100% sure. New turbos would be nice but if the cars power still feels strong I doubt its your turbos. Good luck.
why replace turbos? the wastegate actuators are removable and cheaper part
the problem is the labor
but yeah, it was obviously covered under CPO for anyone wondering.