Ford Custom OBD2 Emissions-On Tuning File Only, 2003–2021 Models

GM Duramax - OBD2 Flash Emissions-On Tuning Kit (2001-2023)

Off-Road Use Only!

GM Duramax - OBD2 Flash Emissions-On Tuning Kit (2001-2023)

Name: GM Duramax - OBD2 Flash Emissions-On Tuning Kit (2001-2023)
Brand: Black Bandit
SKU: BB-GM-DMX-01-23-TUNE-LB7
Price: 1004.49 USD
Availability:  InStock

Type: Tuners | Fits: GM Duramax

3 people are viewing

$1,004.49

Shipping calculated at checkout.

Choose Your Year:

GM Duramax LB7 (2001-2004) GM Duramax LLY (2004.5-2005) GM Duramax LBZ/LMM (2006-2010) GM Duramax LML (2011-2016) GM Duramax L5P (2017-2023) GM Duramax L5D (2019-2023) GM Duramax Sierra 1500 LM2 (2020-2022) GM Duramax Silverado 1500 LM2 (2020-2022) GM Duramax Silverado/Sierra 1500 (2022-2022.5)

Product variants

Enhance the performance of your GM Duramax without removing emissions systems. The OBD2 Flash Emissions-On Tuning Kit is designed for drivers and professionals who want more towing power, efficiency, and reliability while keeping DPF, EGR, and DEF systems functional.

Vehicle Compatibility

2001–2004 Silverado/Sierra Duramax LB7
2004.5–2005 Silverado/Sierra Duramax LLY
2006–2010 Silverado/Sierra Duramax LBZ/LMM
2011–2016 Silverado/Sierra Duramax LML
2017–2023 Silverado/Sierra Duramax L5P (requires ECM E41 Upgrade & Unlock Kit)
2019–2023 Silverado/Sierra 6.6L Duramax L5D (requires ECM E41 Upgrade & Unlock Kit)
2020–2022 Silverado/Sierra 1500 3.0L Duramax LM2 (requires GM E46 ECM Upgrade Service)
2022–2022.5 Silverado/Sierra 1500 3.0L Duramax LM2 (requires L5P E66 ECM Service)

Key Benefits

More Power & Torque – Improves towing strength and overall drivability.
Lower Combustion Temperatures – Optimizes engine operation for durability.
Reduced DPF Regen Cycles – Keeps your truck efficient with fewer interruptions.
Advanced Control – Gain deeper access to adjust and monitor engine parameters.

Specifications

Feature	Details
Tune Type	Emissions-On (keeps DPF/DEF/EGR systems intact)
Compatible Years	2001–2023 Silverado/Sierra (LB7–L5D, LM2)
Required ECM Services	E41 Upgrade (L5P, L5D), E46 Service (2020–22 LM2), E66 Service (2022–22.5 LM2)
Device	OBD2 Flash Tuning Device included
Credits	Pre-loaded, specific to year/model

What’s Included

OBD2 Flash Tuning Device
Pre-loaded tuning credits matched to your truck
Comprehensive software suite (scan, log, calibrate)
Programming and USB cables
Standalone data logging with increased storage and faster read/write

How It Works

Purchase Kit – Select the correct year/engine option for your Duramax.
Receive Device – Shipped with credits and software pre-loaded.
Read Vehicle – Use the OBD2 tuner to read your ECM and create an info log.
Send Files – Email the log and read file to our tuning team.
Get Custom File – Our experts build and return your optimized tune file.
Flash Tune – Upload the file to your device and flash your truck.

The 2022-2022.5 Silverado/Sierra 1500 3.0 Duramax (LM2) requires you to physically send in your ECM using this service here. The price of this product on this website does not cover this required service.

Find OBD2 Flash Tuning Interface Instructions here.

SKU:

BB-GM-DMX-01-23-TUNE-LB7

Availability:

In stock

Vendor:

Black Bandit

Category:

Diesel Performance Parts & Upgrades

Important Notes:

Off-road use only – Not legal for on-road use where emissions laws apply.
Check local laws before purchase and installation.
Professional installation recommended. Requires mechanical/tuning knowledge.
No returns or refunds once tuning process begins.
Warranty may be voided. Confirm with your manufacturer.
Results may vary. Performance gains are not guaranteed.

Hurry Up! Only 4 items left in stock!

TARIFF NOTICE:
While we ship with all required USMCA/CUSMA paperwork, U.S. Customs or carriers may still apply duties or fees at delivery. For details, see U.S. Customs & Border Protection

Shipping

We strive to provide fast and reliable shipping options for all our customers. For detailed information about our shipping rates, delivery times, and policies, please visit our Shipping Page.

Return Policies

Your satisfaction is important to us. If you wish to return an item or request a refund, please review the terms and conditions outlined in our Returns Policy.

Important Notices

Off‑Road Use Only
Products sold by JS Speed are intended for off‑road use and may be illegal on public roads where emissions or pollution‑control laws apply.
Check Local Laws
Before purchasing or installing, verify all applicable local, state/provincial, and federal regulations to ensure the modification is legal in your area.
Professional Installation Recommended
These parts should be installed by qualified professional mechanics. Improper installation can cause performance issues or vehicle damage. Unless a product page explicitly states otherwise, installation instructions are not included. Components are designed for users with solid mechanical knowledge, and minor adjustments or modifications may be required for proper fitment. Returns or refunds cannot be accepted due to difficulty completing an installation or the absence of instructions.
Warranty Impact
Use of these parts may void your vehicle’s factory warranty. Confirm with your vehicle manufacturer before purchase and installation.
Limitation of Liability
JS Speed is not responsible for damage, failures, or issues arising from the use or installation of these products.
Product Images
Images are for illustration only and may differ from the actual product due to manufacturer updates or improvements.
No Performance Guarantees
While these products are designed to enhance performance, JS Speed does not guarantee specific performance results.