Sell your TT to someone in your area that can benefit from it. You have nothing to gain from one and it can cause a lot of issues with your car.
Water/ oil cooled turbos do not need one.
I suppose if you dont want to listen to those of who know, one of your future threads will be titled, "Electrical problem(s) with my dash lights...."
Everyone above is correct, not like they needed validation or anything.