When you buy a vehicle with a standard OE factory turbo installation your getting a powerplant that's pretty well sorted.When you start trying to tweak the turbo or the fuelling or retro fit a turbo to an engine that wasn't designed to take one you're going to hit problems.Yes,you may be able to extract more power and torque but sooner or later there'll be reliability issues.
That's just my thoughts on the matter.
That's just my thoughts on the matter.