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Home > Tuner / SOTF Tune Package / Unlock Kit For GM Duramax L5P 2017-2026

Tuner / SOTF Tune Package / Unlock Kit For GM Duramax L5P 2017-2026

$2,547.97
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Note

  • Note: You may be charged import fees. Please accept the delivery and contact us at service@spelabautoparts.com to resolve any charges. Thanks!
  • READ EVERY STEP BEFORE YOU MAKE ANY MODIFICATIONS TO YOUR TRUCK.
  • Reading and data logging with HP Tuners is free and does not require credits. Credits are only needed when licensing a vehicle to flash/write a tune. 
  • Sotf tune package& credits are non-refundable – Once purchased, they cannot be returned or refunded. Please verify compatibility and confirm your selection before completing your order. If you have any questions, feel free to contact our support team.

GM Duramax L5P Tuning Kit (2017–2026) covers only the tuning segment of our full L5P delete solution(Your delivered items match your purchase selection). It is engineered for owners who have already installed their EGR delete hardware and exhaust, and only require tuning support. This kit includes all components needed to unlock (where applicable), flash, and run custom SOTF or single-calibration tunes on your L5P, eliminating the hassle of sourcing tuning hardware from multiple vendors. 

Required Items for Tuning

To maximize your results, you'll need the following:

Year  OBDII Tune File Unlock ECM Credits
2017-2019 Yes Yes, 5 Level SOTF Tune Package Yes, E41 ECM 4
2020-2023 Yes Yes, 5 Level SOTF Tune Package No, not required 4
2024-2026 Yes Yes, Single Calibration Tune Yes, E42 ECM(Not Included) 8


Important Note

  • 2024-2026 L5P models require E42 service, which is not included in this kit.
  • 2017-2019 trucks use the E41 ECM and are fully compatible with the Unlock Tool process. 2020-2023 Duramax L5P trucks still run E41 hardware with an updated unlock procedure. 2024-2026 trucks use the newer ECM platform and require external unlock service before tuning.
  • Power gain range: varies by tune and supporting mods
  • Operating range: designed for race use; lower EGTs when properly calibrated
  • Your delivered items match your purchase selection

Selectable Power Levels (only for 2017–2023 SOTF):

 1 2 3 4 5
0HP 50HP 75HP 100HP 150HP

Note: 2017-2023 4500/5500 Cab & Chassis models are limited to a 60 HP tune. Contact us before ordering if you have a C&C truck for questions.

We strongly recommend monitoring EGTs when using Levels 4 & 5.

Key Features

  • Power & Torque: Optimized fueling produces immediate performance gains, best realized when combined with supporting exhaust and delete modifications.
  • Drivability: Custom tunes deliver smoother shifting and enhanced mid-range power.
  • Simplicity: Unlock Tool Upgrade eliminates the need for ECM swaps and time-consuming relearn procedures.
  • Flexibility: Works seamlessly with your existing or separately sourced EGR delete hardware and exhaust system.