To reset the service interval with TuneECU:
- Ensure you've set the time and date correctly in the bike's display.
- Connect TuneECU with the ignition on.
- From the "tables" page, swipe left to either the Dashboard or Adjustments page.
- From the menu in the upper-right corner (ECU?), select "Tests & Adjustments".
- From the "Test Devices" window, select "Adjustments" from the bottom-left corner.
- From the "Adjustments" window, select "Reset Service Interval" then select "Run" from the bottom-right corner.
- Select Km or Miles, set the desired updated service interval, then select "Validate" from the bottom-right corner.
There might be a step or two after that, but I didn't want to reset mine in the process.