Innotec works well if the turbo is not too coked up.Have used it myself with mixed success, really worked well for several weeks and then back into limp mode. Would recommnd exercising lever as many times as you can !! and then taking car for a good blast, good motorway blast, using turbo to full capacity.
The final time I used it I felt that the turbo was not as smooth as before and had concerns that the chemical could have removed part of the contamination but not all, putting the turbine out of balance . After a short while all was ok but did not last long.
Now am on the chase for a new turbo as the lever is almost seized. The garage I use would not use Innotec on the car as they thought the turbo was too far gone, must admit I agree.
They are a Vag specialist and list Innotec as a turbo flush, to keep the turbo clean as opposed to fix a
problem.