Is reprogramming of the DSG really needed?
Some high reputation company’s (still) claim that modifications to the DSG are not needed. This is a good prove that even their 20+ years of experience in engine tuning, says nothing about their knowledge of DSG. It is (or was) a trend to overcome DSG issues by using some tricks in modifying the engine software, so the engine controller ignores can-bus commands from the DSG controller (i.e. command: lower torque to 100Nm). The DSG parameters are simply not programmed for values above 350 Nm so many functions do not work correctly.
Besides good DSG software, the engine software needs special modifications as well. The DSG-engine communicates over 8 can.bus channels. 99% of all engine tuners do not know the specific needs. Therefore we strongly suggest to buy our engine software and DSG software as a package.
What will happen if I don't reprogram my DSG?
Clutch slip will occur, even though not always clearly noticeable. After roughly 6-24 months the clutch-slip tends to get higher and higher. The slip is mostly noticeable at +/-2000 rpm when the turbo “kicks in”.
Torque is limited to +/- 350 Nm. The DSG “measures” 1) the actual torque, and 2) the engine ECU sends out a torque signal through the CAN-BUS. If one of these 2 torque levels exceeds 350Nm, the DSG will interact by reducing engine power. Many high-grade tuners deactivate, or better: ‘try’, to deactivate this function in the engine ECU.
Rough incorrect shifting may occur, mostly at full throttle. Launch controls are slower and there are some more symptoms. This is simply because the parameters in DSG are set for low torque values only.
In other words: The safety functions are deactivated, so no power reducing when over stressing the gearbox. Result: The gearbox or clutch will break down. Therefore, we strongly advise to keep these functions intact to avoid clutch slip & wear. And use our DSG software instead of disabling the safety functions through modifications in the Engine software.
Software ‘modification’ or ‘full re-programming’
TVS offers a full TVS file solution. The original software ID will be stored on our database, but the original software itself will not be re-used for our calibration. (what 99% of tuners normally do). This avoids the common bugs & problems with the numerous factory update’s. TVS-engineering’s workshop encounters these update problems every day. 2000 DSG repairs per year help us learning what files to use, or not to use. The pricing table is listed below this section.