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Step 3. Flashing Your ECU and Auto-Licensing your M-Tuner Software

*During the flash process, the vehicle must be in the on position but the engine off and not running*

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1. Flashing is a straight forward process that can take between 90 seconds to 6 minutes depending on the file type. Simple on screen prompts guide you through the process. C

2. Open M-Tuner and connect the OBD M-Engineering dongle to your PC via the included USB cable. The other end connects to your vehicle via the OBDII port. If you have a stable connection the “Flash ECU” button (1) will now be in bold and no longer grayed out.

3. Turn the vehicle to the on position but do not start the engine. A simple way to know you’re at the right point is if the tach is showing but the engine is not running. This state can be reached simply by pressing the start/stop button with your foot off of the brake pedal.

4. Click “Flash ECU.” (1) A directory will appear. Select the file you’d like to flash and open it.

   1. A battery tender is highly recommend, particularly if flashing a M-Tuner(F) file.

5. If this is the first flash you are completing on M-Tuner, licensing of the software is needed. After you select your (F) file to flash on the car, you will be prompted to enter in your Customer Name for the license. You can simply put whatever you like in the box such as your full name and the year/make/model of the car. Once this step is complete this allows you to gain full control of reading and clearing faults as well as datalogging.
   

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6. A confirmation window with map notes will now appear. Click yes to proceed. No to abort.

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Reading and clearing Faults.MOV

Dyno Mode

To activate dyno mode, your car must be in the key-on position with the engine off. At the top of M-Tuner, select Acutators>Porsche 992>Dyno Mode>Enable 2WD.
This will allow you to run your car on the dyno properly without traction control interfering. Once dyno mode is active, you will receive a notification on M-Tuner and the dash.

If the hazards being blinking for any reason after a flash or key cycle, you will need to disable and reenable dyno mode.

Don’t forget to turn it off when you’re done!

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Advanced Troubleshooting