DIESELR 3.0L GM Duramax LM2 E66 All In One Kit (2021-2022)
DIESELR 3.0L GM Duramax LM2 E66 All In One Kit (2021-2022) - Single / Cat & DPF Straight - Race Pipe (Stainless Steel) is backordered and will ship as soon as it is back in stock.
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DIESELR 3.0L GM Duramax LM2 E66 All In One Kit (2021-2022)
DIESELR 3.0L GM Duramax LM2 E66 All In One Kit (2021-2022) - Single / Cat & DPF Straight - Race Pipe (Stainless Steel) is backordered and will ship as soon as it is back in stock.
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Description
Description
3.0L Duramax LM2 E66 Tuning Kit for 2022.5–2026 (MPVI4 Platform)
Purpose-built for the 2022.5–2026 GM 1500 trucks equipped with the 3.0L Duramax LM2 E66 (Global B) platform, this DIESELR All-In-One Kit provides full ECM tuning support and precision calibration. Designed for truck owners who need compatibility with GM’s Global B architecture, this kit includes every required component to tune with HP Tuners MPVI3 and optimize performance and reliability off-road.
- Requires E66 ECM (Global B) to be unlocked (sold separately) - Click Here
What’s Included in the DIESELR LM2 E66 MPVI3 Kit:
-
HP Tuners MPVI4 – BLANK
Industry-leading OBDII tuning device for ECM access and control -
HP Tuners Universal Credits (6)
Required for flashing the E66 ECM with custom files -
DIESELR MPVI4 E66 Tune Files (2022.5–2026LM2)
Single tune option, calibrated specifically for E66/Global B systems -
DIESELR EGR Upgrade Kit (2020–2026 LM2)
Helps reduce soot, lower temps, and enhance flow -
DIESELR Cat & DPF Race Pipes (2020–2026 LM2) (Stainless Steel, Alumized)
Stainless 16-gauge T409 system, designed for bolt-on fitment -
DIESELR 3" Turbo-Back Exhaust System (With Muffler)
High-flow design, built for performance with quieter operation
Available Kit Variants:
- Year: 2022.5, 2023, 2024, 2025
- Tune Type: Single Tune Only
- Exhaust Type: Cat & DPF Race Pipe / 3" Turbo-Back w/ Muffler
- EGR Kit: Included
Why This LM2 E66 Kit Works:
- Built exclusively for E66/Global B Duramax platforms (2020–2022)
- MPVI4 and DIESELR tuning files tailored for drivability, towing, and reliability
- Exhaust and EGR upgrades improve airflow and reduce long-term engine strain
- Tune from your laptop—no ECM removal required
Exhaust System Features:
- Mandrel-bent 16-gauge T409 stainless construction
- Contour hangers and reinforced flanges for easy installation
- TorcTite® clamps ensure leak-free performance
- Retains stock muffler where applicable
Fitment:
- Compatible with 2020–2022 Chevrolet Silverado and GMC Sierra 1500 with 3.0L LM2 Duramax E66
- Not for on-road use or emissions-regulated vehicles
Install Notes:
- Requires Windows laptop and HP Tuners software for ECM flashing
- Tuning file revisions processed after form submission
- Remote tuning assistance available from DIESELR
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