AMDP 2017-2023 6.6L L5P Duramax EZ LYNK Custom Tuning Support Package

AMDP Custom Tuning for 2020-2023 L5P Duramax with EZ Lynk AutoAgent

Unlock the full potential of your 2020-2023 Chevrolet Silverado or GMC Sierra equipped with the 6.6L L5P Duramax engine using AMDP's premium custom tuning delivered via the industry-leading EZ Lynk AutoAgent device. Our expertly crafted tunes deliver enhanced horsepower, torque, throttle response, and drivability while maintaining reliability for daily driving, towing, or performance applications.

Key Features:

Custom-Calibrated Power Levels: Single power level tunes optimized for your specific setup, with shift-on-the-fly (SOTF) capability coming soon for seamless on-the-go adjustments.

Cloud-Based Instant Tuning Library Access: Enjoy immediate access to AMDP's full library of tunes directly through the EZ Lynk cloud platform. No waiting for file deliveries.

Cab & Chassis Supported: Full compatibility for both pickup and cab & chassis models (excluding Kodiak/International L5D trucks).

Transmission Tuning (T93):

AMDP now offers custom transmission tuning for T93 (2020-2023 models) controllers. This optimizes shift points, torque management, line pressure, and overall drivability for smoother, firmer shifts and better performance under load. Unlocking and flashing are conveniently handled directly through the OBD port using your EZ Lynk AutoAgent device—no additional hardware required.

Requirements:
To install and use AMDP Custom Tuning with EZ Lynk, the following items are required:

EZ Lynk AutoAgent 3 device
Compatible smartphone (iOS or Android) with the EZ Lynk app installed
CAN-Bus plugs (required for proper vehicle communication)

Support Package Options:

Limited Support Package: Gain full access to all available tunes for 4 weeks. After this period, any tunes already installed on your vehicle will remain functional. Easily upgrade to Full Support at any time while your vehicle remains supported.

Full Support Package: Unlimited access to all tunes and future updates for as long as we support the L5P platform.

Most 2017 year models and 2018s are not successfully unlocking but will flash once unlocked with HPT or Power Programmer. 

EZ will allow you to send in the ECM to them for the ECM to bench unlocked where it will accept the EZlynk files for free.

But if you want to unlock any 17 or 18 trucks on-site you will need to use a power programmer or HPT unlock box. This will cost credits to unlock and AMDP will not be covering that cost.

For the moment, this product will be single power files only.

Shift on the fly will be coming shortly.

Cab and Chassis are supported

This product is not for Kodiak/International L5D trucks.

Can-Bus plugs are still required.

We will be sharing a dash message reset file that has instructions for it's use if you have a dash message after tuning.

Instructions:

Step 1: Purchase this support pack product for your desired time frame

Step 2: If you have a shop level scan tool, fill the DEF tank and perform a DEF level reset. We always prefer to have the dash clear before flashing but if that is not possible then we can deal with it after flashing

Step 3: Plug the Ezlynk device into the vehicle and a prompt asking you to accept an autolink from AMDP Custom Tuning will appear. Click "Accept"

Step 4:  Flash your desired tune into the vehicle and ensure you click select a file from the folder that matches the current model year that EZlynk displays as your model year. 

Additional Support:

If you encounter dashboard messages post-tuning, email support

For modified trucks (e.g., FASS fuel systems, CP3 conversions, aftermarket turbos), contact us via email for fully custom-built tunes if you do not see anything autoshared for your application.

Experience smoother shifts, reduced turbo lag, and real-world performance gains with AMDP's proven tuning expertise. Join thousands of satisfied Duramax owners—elevate your drive today!