SERVICE · VMAX OFF
VMAX OFF software
Remove factory road speed restrictions (250 km/h German gentleman agreement, 130 km/h fleet limits or 190 km/h commercial van locks) directly inside the calibration.
Typical symptoms / why workshops apply VMAX OFF
- Engine cuts boost/throttle at 250 km/h on autobahn / track
- Commercial delivery van limited to 90 km/h or 120 km/h
- Export vehicle restricted to domestic speed caps
What Softechpro V5 actually patches when you select VMAX OFF
- Locates primary and secondary road speed limiter scalar constants and matrix maps.
- Raises the limiter ceiling to 350+ km/h or completely disabled.
- Adjusts gear-dependent speed thresholds.
- Auto-checksum.
ECU families supported for VMAX OFF
All Bosch EDC16 / EDC17 / MD1 / MG1Continental Simos, Siemens SIDDelphi DCMMarelli
5-step workflow
- Read out your ECU bin file via OBD or bench (KESS3, AutoTuner, MPPS, Trasdata, Flex, FRF flasher).
- Open Softechpro V5 and drop the .bin / .ori / .hex / .s19 / .frf onto the workspace. Softechpro auto-identifies the ECU family from the header signature.
- Select VMAX OFF from the service tab.
- Hit Save patched .bin. The ECU-specific checksum is recomputed automatically.
- Flash the patched file back via your existing flasher. Reset adaptations via the OEM scan tool if required.
Legal notice
For track use, unrestricted German Autobahn sections, emergency response and export fleets. Ensure tire speed ratings (V, W, Y, (Y)) match intended vehicle speeds.
Frequently asked questions
Does removing VMAX affect cruise control?
No. Cruise control operates on a separate comfort governor map. Only the absolute maximum vehicle road speed ceiling is released.