2017-2023 L5P Duramax Peakside EZLynk Tuning

Unleash the full potential of your 2017–2023 Duramax L5P with custom EZ Lynk tune files from Peakside Performance. Whether you're hauling heavy, hitting the highway, or dialing in for all-out performance, our single-tune calibrations are built to maximize torque, boost throttle response, and improve drivability across the board.

What is included:

• Single File Tunes – Tailored for your exact needs, each file delivers sharper throttle, improved efficiency, and enhanced towing capability.

• Support Packages – Planning future mods? Our full support package includes ongoing revisions so your tune evolves with your truck. Limited support packages are perfect for those looking for a single flash

Say goodbye to factory limitations. Our tunes optimize shift strategies, fuel delivery, and throttle mapping—giving your L5P the power, reliability, and response it was meant to have from day one.

IMPORTANT - 2017-2018 L5P TRUCKS WITH LOCKED ECM'S WILL NOT BE ABLE TO TAKE ADVANTAGE OF THIS OFFERING AT THIS TIME. 2019-2023 ARE ABLE TO BE FLASHED WITH A LOCKED ECM. IF YOU PURCHASED AND RECEIVED FILES ALREADY FOR A 17-18 AND THEY WILL NOT LOAD, REFUNDS WILL NOT BE GIVEN - YOU NEED TO UNLOCK THE ECM PRIOR TO TUNING.