Not true. It depends what failed in the turbo. I have not ready many cases of the revision turbos failing, some do fail but those are horribly treated turbos.
No of cause not all of them but what Ive been told is that since the turboshaft breaks all of that wheels just goes strait in to the engine and that is = new engine.
But as I said Im just trying to find out the truth since I really do want to get my car tuned . Just dont want to sit with a engine in parts and no warranty