DIESELR 3.0L GM Duramax LM2 E66 All In One Kit (2022.5-2026)

DIESELR 3.0L GM Duramax LM2 E66 All In One Kit (2022.5-2026)

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$2,320.03
$2,320.03
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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, 2025,2026
  • 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 (2020–2026)
  • MPVI4 and DIESELR tuning files tailored for drivability, towing, and reliability
  • Exhaust and EGR upgrades improve airflow and reduce long-term engine strain

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 2020–2026 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

 

DIESELR 3.0L GM Duramax LM2 E66 All In One Kit (2022.5-2026)

$2,320.03

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Yes, most products we sell are backed by the manufacture's warranty. Warranty coverage varies by brand, so check the product listing or contact us if you have any questions before purchasing.

What happens if I don't like it?

If you're not completely satisfied, we're here to help. Eligible unused items may be returned within 30 days of delivery, subject to our return policy and applicable restocking fees.

How fast is shipping?

We process most orders within 1-2 business days. Shipping times vary by product availability and location, but most customers receive their orders within 3-7 business days after they ship.

What's the returns policy?

Returns must be requested within 30 days of purchase, Items must be new, unused, and in their original packaging. Approved returns are subject to a 30% restocking fee. Custom order, electrical, and special order items may not be eligible for return.

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