DIESELR GM Duramax L5P All In One Kit (2017-2023) w/ MPVi4

The DIESELR GM Duramax L5P All-In-One Kit (2017-2023) is the ultimate tuning solution for serious Duramax owners. Designed for real-world power, better throttle response, and improved efficiency, this all-in-one package gives you full ECM tuning control with MPVI4, along with exhaust and EGR upgrade options to match your setup.

With DIESELR custom tune files and Shift-On-The-Fly (SOTF) support, you can adjust your power levels instantly—no reflashing required. Whether you’re hauling heavy loads, daily driving, or looking for more power on demand, this kit delivers.

✅ What’s Included

✔ MPVI4 Tuning Device – The most advanced tuning interface for Duramax ECM tuning.
✔ Custom DIESELR Tune Files – Developed for real-world performance and reliability.
✔ Tune Type Options – Single Tune or Shift-On-The-Fly (SOTF).
✔ Exhaust System Options – Cat & DPF Race pipe, 4-inch Downpipe-Back, or 5-inch Downpipe-Back.
✔ EGR Upgrade Kit .
✔ 6 Universal Credits – Required for ECM unlocking and flashing.

Extra Add-On Needed

E41 Upgrade Kit – Necessary for ECM unlock on 2017-2018 models.

Power Levels

DIESELR Custom Tune Files offer five distinct performance levels built for towing, efficiency, and power gains.

• Level 1: Stock Power
• Level 2: +50 HP
• Level 3: +80 HP
• Level 4: +120 HP
• Level 5: +180 HP

With SOTF tuning, you can adjust power levels instantly using the steering wheel controls.

💪 Why Choose the DIESELR GM Duramax L5P All-In-One Kit?

✔ MPVI4-Based Tuning – The most powerful ECM tuning device for L5P Duramax.
✔ SOTF Adjustments – Change power levels in real-time using steering wheel controls.
✔ All-In-One Solution – Everything needed for full ECM tuning in one kit.
✔ Backed by DIESELR’s Expert Tuning  – Real tuning, real power, real results.

🔧 Variant Options

Choose Year:

• 2017-2019 Duramax L5P
• 2020-2023 Duramax L5P

Choose Exhaust System:

• Cat & DPF Race pipe
• 4-Inch Downpipe-Back Exhaust
• 5-Inch Downpipe-Back Exhaust

Tune Type:

• Single Tune
• Shift-On-The-Fly (SOTF)