AMDP 2020-2023 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.

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!