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)

Choose Tune Type
Choose Exhaust System
$2,320.03
$2,320.03
  • Fully secure checkout
  • Trusted by thousands
  • Rated and reviewed

Want next day delivery? Be quick!

I18n Error: Missing interpolation value "end_date" for "Ends on {{ end_date }}"

Question about this product?

We're happy to help.

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

 

Score 1
Score 2
Score 3
Score 4

Specifications

Example label

Value

Example label

Value

Example label

Value

Example label

Value

Materials

Add tab content here to outline the materials used in your product, highlighting their origins, properties, and benefits. For instance, if you’re describing a jacket, detail the type of fabric used, its durability, and any eco-friendly qualities. Explain the craftsmanship involved, such as specialized weaving or treatment processes, and mention other materials like leather trims or metal fixtures to assure customers of the product's quality.

Dimensions

Include tab content here to detail the dimensions of your product, specifying its height, width, depth, and weight. For example, if you're describing a piece of luggage, provide measurements like the overall height with and without wheels, the internal packing space, and its empty weight. Clarify any additional dimension-related features, such as adjustable handles or expandable compartments, which offer flexibility and extra capacity.

Care Instructions

Incorporate tab content here to provide detailed care instructions for your product, specifying how to properly maintain and extend its lifespan. For example, if you're discussing apparel, include washing and drying guidelines, such as machine wash cold, tumble dry low, or hand wash only. Specify if any detergents or cleaning agents should be avoided and whether the item should be ironed or dry cleaned.
DIESELR 3.0L GM Duramax LM2 E66 All In One Kit (2022.5-2026)

$2,320.03

Highlight feature

More about this stand-out feature.

  • ACHIEVING

    4.8

    average rating

  • With

    95%

    positive reviews

  • LESS THAN

    3%

    return rate

Add a tagline

Highlight feature 2

Highlight key qualities of the product, such as the materials, ingredients, or components used. Emphasize durability, reliability, or performance in everyday use.

Draw attention to the care and craftsmanship that went into its design and development, setting it apart in terms of quality and attention to detail.

Add a tagline

Highlight feature 3

Show how the product fits naturally into different settings or routines. Whether at home, on the go, or during daily tasks, it’s designed to be flexible and easy to use.

Emphasize versatile features that make it suitable for a variety of needs or situations.

What's in the box?

  • Item 1

  • Item 2

  • Item 3

  • Item 4

Highlight 1

Built for everyday use, the product features carefully chosen components that balance durability with visual appeal.

Highlight 2

Featuring a streamlined and compact design, the product is crafted to fit seamlessly into a variety of spaces and lifestyles.

Highlight 3

We offer a hassle-free returns policy to ensure your complete satisfaction. If you're not happy, simply return it within 30 days for a full refund.

Does it come with a warranty?

Add your collapsible row content here. If it's set to open one row at a time, consider keeping the content in each row about the same length.

What happens if I don't like it?

Add your collapsible row content here. If it's set to open one row at a time, consider keeping the content in each row about the same length.

How fast is shipping?

Add your collapsible row content here. If it's set to open one row at a time, consider keeping the content in each row about the same length.

What's the returns policy?

Add your collapsible row content here. If it's set to open one row at a time, consider keeping the content in each row about the same length.

Don't take our word for it...

  • Testimonial

    Include a review of the product or collection left by a customer. Or perhaps it's a review of your store as whole.

    Jane Doe
    Director, Company name

  • Testimonial

    Include a review of the product or collection left by a customer. Or perhaps it's a review of your store as whole.

    Jane Doe
    Director, Company name

  • Testimonial

    Include a review of the product or collection left by a customer. Or perhaps it's a review of your store as whole.

    Jane Doe
    Director, Company name

Questions about this product?
Don't be a stranger.

Get in touch

Exclusive discounts, just for you. Sign up now.