TCU Tuning Gains Power in PDK DSG Shift Cars is Beneficial VRTuned.com March 27, 2014 Product Info, Tuning Tech TCU Tuning is quite a new phenomenon for road cars due to the priority over general ECU tuning which has been at the forefront since the late 1980’s. The main priority for the “average” car driver has always been towards the emphasis of extra pow...