To increase the speed limiter on a Cummins engine using Cummins Insite, connect the software to the truck's ECM, navigate to "Features and Parameters," locate the "Road Speed Governor" or "Maximum Vehicle Speed" setting under the "Speed Limit" or similar section, enter the desired speed, and click the "Send to ECM" icon to apply the new setting. Ensure your Insite software is up-to-date and you have the proper technician-level access, as some ECMs may be protected by security or have active fault codes blocking parameter changes.
Steps to Increase Speed Limiter:
- Connect: the diagnostic tool and Cummins Insite software to the truck's ECM via the diagnostic port.
- Verify: your software is updated to the latest version for compatibility and that your access level allows parameter changes.
- Navigate: to the "Features and Parameters" or "Speed Limit" section in the Insite software.
- Locate: the setting for "Maximum Vehicle Speed" or "Road Speed Limit".
- Input: the new desired speed value into the designated field.
- Click: the "Send to ECM" icon or button to program the change.
- Confirm: that the change was written successfully to the ECM, which may require an ECM reboot.