I have the dreaded turbo waste gate rattle on my '08 535xi with 88K miles. Complained about it before warranty expired last year. BMW of Tulsa claimed the noise was normal and it was injector noise. Year later, (6,500 miles out side of warranty) noise is worse, take it in and they say the waste gate rods have severe play and turbos need replaced. Refuse to honor warranty, claiming their hands are tied by corporate BMW... Frustrated that my dealer / BMW will not honor this as I believe the tech did a poor job diagnosing the 1st time. What is involve to remove turbos on an X drive car? Can the turbos be removed with the engine in the car, or will I have to drop the the subframe and engine? Any words of wisdom will be appreciated as it is hard to find info specific to the xi models.