EZ Lynk Tune Files (2017-2023 Duramax L5P 6.6L) SOTF

Our 2017–2019 L5P Duramax Emissions-On Tune Files are designed for customers who want improved drivability, towing performance, and controlled power increases while retaining all factory emissions components.

These calibrations are optimized for daily driving, work trucks, and towing applications, with full support provided throughout the unlock and flashing process.

Key Features

• Emissions-On Calibration – All factory emissions systems remain fully intact
• SOTF Power Levels (Cruise Control)
  • 2017–2019 L5P: 0–180 HP or 0–220 HP options available
  • 2020–2023 L5P: 0–150 HP option available
• Improved Throttle Response – Smoother pedal mapping and drivability
• Towing Optimized – Enhanced torque control and safer power delivery under load
• Remote Support Included – Step-by-step assistance during unlock and flashing

Vehicle Compatibility

• 2017–2019 Chevrolet Silverado 2500HD / 3500HD
• 2020–2023 Chevrolet Silverado 2500HD / 3500HD
• 2017–2019 GMC Sierra 2500HD / 3500HD
• 2020–2023 GMC Sierra 2500HD / 3500HD
• 6.6L L5P Duramax Diesel

Unlock & Flashing Information (IMPORTANT)

Most 2017 model year trucks and early 2018 models require an on-site unlock.

• These vehicles cannot be initially unlocked via remote flashing
• Once unlocked using HP Tuners or a Commander device, files can be flashed normally
• On-site unlocking requires:
  • HP Tuners unlock box or power programmer
  • Credits are required to complete the unlock process

After the initial unlock is completed, all future flashing can be done remotely.

What’s Included

• Custom Emissions-On tune file(s)
• SOTF power levels selected based on model year (controlled via factory cruise control buttons)
• Remote flashing support
• Calibration assistance if revisions are needed