Quote Originally Posted by BradC View Post
Given the issue lies somewhere between the actuator and the moving vanes in the exhaust housing, one would think a dedicated product designed to de-coke the vanes might have a longer lasting result than 2 stroke.
I agree Brad.

However, all the vanes are on the turbine side, it would be near impossible to get anything in there without either putting it through the engine or pulling the turbo off. I wonder how effective the stuff would be after being burnt in the engine?

You could try pulling the exhaust I guess and spray something in there.

I've got one BV50 turbo (2.7 TDV6) that was so carboned up I couldn't physically move the vane lever even with it pulled off the car.

I've used a number of litres of 2 stroke oil on our cars attempting to stave off replacing the turbos, it has had limited success, but not enough to call it a "fix".