2017-2023 Duramax AMDP HP Tuners Transmission Custom Tune Package

Note: This package includes Tune Files & an MPVI4. If you already have a device and are looking for just the Tune Files, Click Here!

Take your 6.6L L5P Duramax's performance to the next level with AMDP’s specialized transmission tuning bundle. This package includes the HP Tuners MPVI4 device and custom calibration designed specifically for the Allison 10-speed and 6-speed units. By optimizing shift points and increasing line pressure, this tune ensures your Duramax delivers power to the ground efficiently while significantly reducing clutch slippage. Whether you're towing heavy or seeking a crisper street drive, this calibration delivers the reliability and refinement your heavy-duty drivetrain deserves.

Flashes directly through the OBDII port on both the T87A (2017-2019) and T93 (2020-2023) transmission controllers.

Package Includes:

• HPTuners MPVI4 Blank Device
• 2017-2023 6.6L Duramax AMDP HP Tuners Transmission Tuning
  

• Optimized Shift Strategy with Crisp, Firm Shifts & Smoother Transitions
• Increased Line Pressure for Reduced Clutch Slippage
• Adjusted Shift Points for Stock or Larger Tires
• Improved Torque Converter Lockup
• Torque Management Matched to Your AMDP Engine Tuning
• Enhanced Towing Performance, Better Drivability Under Load & Lower Temps

• Credits: Tuning the TCM requires 4 HP Tuners Universal Credits. 
• Available with or without HP Tuners Credits (Required if you have not previously licensed/flashed the TCM).
  
• Licensing the engine (ECM) does not cover the transmission (TCM). This tune requires its own credits even if your truck is already engine-tuned.
• 2017-2019 (T87A): Now supports direct OBDII flashing, no bench unlock or modified TCM required.
• 2020-2023 (T93): Also flashes directly through the OBDII port, no unlock required.
• Hardware Requirements: An HP Tuners MPVI4 or MPVI3 device is required to load tuning. (MPVI4 Included in this package)
  
• The HP Tuners VCM Suite 5.2 (or latest Beta) MUST be used for all L5P applications.

How it works

HP Tuners VCM Suite 5.2 or newer MUST be used. (Update before proceeding).

1. Install the latest version of the HP Tuners VCM Suite on your laptop.
2. Connect your MPVI4 device to the vehicle OBDII port and your laptop.
3. Read the TCM and email the stock file to tunes@dirtydieselcustoms.com with your Order Number.
4. You will receive your custom AMDP transmission tune file via email in 1-2 business days.
5. Open the custom tune file in VCM Editor and select WRITE.

If you already have an MPVI device and are just looking for the tune files, click here

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