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      HP Tuners RTD4 & TDN App Reading & Writing Instructions

      These are the steps to get your truck linked up, read off and flashed using the TDN app

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      Tune Reading Instructions:

       

      1. Take your RTD4 out of the box and plug it into your trucks OBD2 port

       

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      2. Go onto your phones app store and download TDN (tune delivery network from HP Tuners)

       

      3. Open the TDN app and create an account using the account option on the main screen

       

      4. After the account is created and signed in select link tuner on the screen in the app

       

      5. Use the code GJMC-8361 to link to us as a tuner, we will get a notification and will add you to our system (please let us know if you have any issues linking or let us know when you do it for a quicker turnaround time)

       

      6. Select the icon on the bottom right corner which is labeled tools if you are in the main menu and choose setup RTD4 (make sure your phones WIFI and Bluetooth are enabled before proceeding)

       

      7. Follow the prompts on the screen to sync your phone to the RTD4

       

      8. Once the syncing is complete you will need to hit the lighting bolt icon on the bottom of your screen which is the flash selection from your main menu

       

      9. Make sure your ignition is in the run position and follow the prompts on the screen and hit ready to continue

       

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      10. Allow the device to sync and then the truck will be read off, this will take over 5 minutes to complete

       

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      11. Once the read completes it will send that file over to our tuning server and we can get your tune file built from there

       

       

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      12. Tunes typically take 1-2 business days to process but sometimes more in certain situations (you will receive an email from HP Tuners when the files are sent)

       

       

      Tune Writing Instructions:

       

      1. Plug the RTD4 into your trucks OBD2 port and turn the ignition on

       

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      2. Open up the TDN app and go choose the flash option from the main menu (make sure your phones WIFI and Bluetooth are enabled before proceeding)

       

      3. You should see the restore file which is your stock tune and then select the sync files button to bring your mod files over

       

      4. Push and hold on the tune you want to load and choose full write to write the tune

       

      5. Follow onscreen prompts to load the tune onto the truck

       

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      6. Once the tune is loaded you are good to go from there (this may take 5+ minutes)

       

       

      If you have any further questions or didn't find an answer to the question you had in this article, click here and fill out the form and one of our Remote Support experts will be in contact with you.