General MM3 Tuner Instructions

Tuning your Truck with MM3 Hardware **MM3 Hardware does not come with any tunes, you must read the stock file off of the truck & send it in*

Installing your MM3 Hardware Into your truck.

1. Layout the wiring and MM3 Modules.

2. Locate the Vehicle OBD2 Port under the dash.

3. Find a good location under the dash to mount the COM MOD BLACK Box. It Should snap together as one piece and you should be able to secure it up under the dash. Plug the VGA style cable into the com mod and the other end into the OBD2 Port. 

4. Find a convenient position for the screen/mount. From there go ahead and run the Micro USB cable from the screen to the COM MOD under the dash. 

5. From here the only wire left is your J1939 Can Communication wire. This wire needs to get ran through the firewall and into the cab of the truck. You will need to locate the J1939 Connector often found beneath the intake horn area. Secure it, and plug it in. 

 

MM3 Stock File Reading Instructions
1. Touch the screen to turn the mm3 on
2. Select ECM tuning in the main menu
3. Select ECM
4. Select get stock file
5. Follow the on-screen prompts
6. Turn ignition off and remove sd card.
7. Plug sd card into computer


8. Open up the sd card on your computer
9. Click on the custom folder


10. Click on stock
11. Copy the stock.mm3 file to your desktop
12. Open up your email and send the stock.mm3 file to stockfile@duramaxtuner.com. Please include your name, order number, & VIN number.

MM3 Custom Tune Loading Instructions

1. Plug sd card into computer


2. Open up the sd card on the computer
3. Click on the Custom folder


4. Copy the files to the appropriate folders, .ECM file goes into the ECM folder and .RTG files go into the RTG folder
5. Remove the sd card from the computer and install it into the mm3.


6. With the key in the on position engine not running, touch the screen to turn the mm3 on.
7. Select ECM tuning
8. Select ECM
9. Select Program custom file to ECM
10. Choose the tune you want to install
11. Follow the on-screen prompts

 

MM3 Tune Switching Instructions For 2004-2009 Trucks

1. In the main menu select any of the dashboard icons on the top of the screen
2. Touch the screen anywhere
3. Select the rt program icon
4. Select the tune


MM3 Tune Switching Instructions For 2011-2018 Trucks

1. In the main menu select any of the dashboard icons on the top of the screen
2. Touch the screen anywhere
3. Select the switch icon
4. Select the tune


MM3 SOFTWARE Installation Instructions- FOR UPDATING YOUR UNIT

1. Go to mm3power.com
2. Go to downloads
3. Download mm3 agent and 7zip
4. Install 7zip then open mm3 agent with 7zip to extract the files
5. Install mm3 agent then follow the update prompts on the screen
6. Click on the mm3 icon on the bottom right corner of your computer by the hidden icons and go to devices
7. Click on your device and choose to update or initialize the card if you are setting up a new one
8. Follow the on-screen prompts

MM3 Stock Tune Loading Instructions

1. Touch the screen to turn the mm3 on
2. Select ECM tuning in the main menu
3. Select ECM
4. Select return vehicle to stock software
5. Follow the on-screen prompts

MM3 Data Logging Instructions

1. In the main menu select any of the dashboard icons on the top of the screen
2. Touch the screen anywhere
3. Select the HS log button
4. A red light will come on indicating that the log is taking place
5. Push the hs log button again to stop
6. Take the sd card out of the mm3
7. Plug the sd card into your computer
8. Open up the sd card on your computer
9. Click on the log folder
10. Copy the log file over to your desktop
11. Attach the data log to your email and send it over to the appropriate team member

 

MM3 Agent Install Video and Firmware Update  

Don't have 7-zip? Click here for the mm3 agent download.