How to Swap a NEW unlocked ECM for L5P Delete Kit with ECM

READ ALL INSTRUCTIONS CAREFULLY BEFORE MODIFYING YOUR VEHICLE.

THE TDN APP IS NOT REQUIRED, SIMPLY FOLLOW THE STEPS BELOW

Overview of the L5P Tuning Procedure with a New ECM:

Ensure all emissions components are installed and fully functional. The DEF tank should not be empty. For 17-19 models, soot levels should be below 70% before continuing.

Steps to Follow:

  1. We will send you all the necessary components.
  2. Install the latest version of VCM Suite BETA software. Ensure you check for the latest BETA update every time you launch the software.
  3. Connect the MPVi3 to your computer and open VCM Scanner.
  4. With the factory ECM in place, save an info log. Instructions for creating an info log can be found here.
  5. Initiate the ECM swap process (Vehicle > Controls and Special Functions > System > Replace ECM).
  6. When prompted, install the new ECM. Always remove the battery grounds before disconnecting the ECM. Handle connectors carefully to avoid damaging pins.
  7. Complete the ECM swap process within VCM Scanner.
  8. After installing the new unlocked ECM, download the .hpt read file:
    • Go to VCM Editor > Close File > Read.
    • Select "Read Entire" for the ECM section and "Do not read" for the TCM section.
    • Click "Read", then save the file as "[ORDER #]__[VIN]".

Submitting Your Info:

  1. Save another info log. Instructions can be found here.
  2. Go to this page and fill out the form with your email, order number, VIN, and other details.
  3. After submission, our tuner will request an info log to verify.

Final Steps:

  1. If you reinstalled the original ECM in step 9, reinstall the factory ECM before using the vehicle in stock form. DO NOT REMOVE EMISSIONS SYSTEMS YET.
  2. After receiving your tune file (within 3-5 business days), follow these steps:
  3. Install the new ECM again, open VCM Editor, and connect the MPVI3 to your laptop (not the truck).
  4. Use VCM Editor to resync the MPVI interface (Help > Resync Interface).
  5. Ensure no tune file is loaded by closing the file (use the Folder icon in the top left menu).
  6. Open the tune file sent to you (Ctrl+O). Connect the MPVI to the OBD port.
  7. Click "Write Vehicle" and change the option to "Write Entire" instead of "Write Calibration" before confirming.
  8. Turn the ignition off.

Important Notes:

  • Use a battery charger supplying at least 10 AMPs.
  • Always close open files when launching VCM software to prevent confusion.
  • If VIN issues arise after tuning, update it via VCM Scanner (Vehicle > Controls and Special Functions > System > Change VIN).
  • VCM Suite BETA software requires a specific .NET version; update it via the HP Tuners Downloads section.
  • We are not responsible for errors caused by incorrect files being submitted. Follow the instructions carefully.

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