Writing/Flashing a new tune file can only ever be done after having already successfully READ your ECU's Original tune file.
- Ensure that your battery is fully charged and healthy
- Read our article about Precautions: Writing ECU
- Connect your tablet to your vehicle, and let it boot up.
- Turn the key/ignition to the ON position without starting your engine.
- For cars with conventional keys, that is TWO key clicks from OFF.
- For cars with push-button start that is TWO button presses WITHOUT depressing the brake or clutch pedal.
- Your fuel gauge should be indicating a fuel level when you're in the ON position.
- Select the TUNING menu option on your tablet.
- Select the WRITE option.
- Choose the tune file you’d like to flash, and then follow the on-screen prompts to successfully program your ECU.