If your turbos were "bad", you'd hear a loud whine and likely have oil consumption. I would look at the electronic wastegate actuators before deciding to replace turbos - your symptoms of low boost could be an indicator that one or both wastegates aren't closing completely.
__________________
2015 F80 ///M3 Sedan 7DCT Tanzanite, 2022 X3 sDrive30i 8AT Brooklyn Grey
|