1. Connect a diagnostic tool to the truck's OBD-II port.
2. Access the ECU menu and find the "Speed Limiter" setting.
3. Change the speed limiter setting to the desired value (e.g. 200 km/h).
4. Save the changes and disconnect the diagnostic tool.
Please note that increasing the speed limiter may have certain risks and legal implications. Check with your local laws and regulations before performing this modification.