2017-2023 L5P Duramax Engine Tuning (ezlynk)

Custom engine calibration for the 2017–2023 L5P 6.6L Duramax, delivered via ezlynk AutoAgent 3 — the modern L5P generation tuned through GM's factory interface with optional Allison 10L1000 transmission coverage.

What's included

• Custom VIN-matched L5P engine calibration with multiple switchable power levels
• Fueling, timing, boost, and rail pressure calibration
• Optional Allison 10L1000 (10-speed) TCM calibration — available as an add-on variant
• Datalogging support through the ezlynk platform

How it works

Files are delivered via ezlynk AutoAgent 3. Your calibration is built from your stock file and VIN-matched. The AutoAgent 3 device connects via OBD-II and manages tune switching and datalogging directly from the ezlynk app. An ezlynk AutoAgent 3 is required.

Support tiers

• Limited — Engine Only (4 Weeks): Engine calibration with four weeks of revision rounds.
• Limited + Trans (4 Weeks): Engine and Allison 10L1000 calibration with four weeks of revisions.
• Full — Engine Only (Lifetime): Unlimited revisions and lifetime access, engine only.
• Full + Trans (Lifetime): Engine and Allison 10L1000 calibration with unlimited revisions and lifetime access.

Requires an ezlynk AutoAgent 3 device. Not compatible with EFI Live or other platforms.

All calibrations are developed for emissions-compliant performance and must be used in accordance with applicable local, state, and federal regulations.