3.0 Duramax Full Delete Kit with OBD2 Tuning (E66 / Global B)
The 3.0L GM Duramax E66 Delete Kit combines an OBD2 programming interface, custom ECM calibration, a 3-inch exhaust system, and EGR delete components in one package.
Designed for compatible Chevrolet Silverado 1500 and GMC Sierra 1500 diesel pickups equipped with the E66 / Global B ECM, this package provides matched hardware and vehicle-specific tuning for off-road and racing use.
Unlike earlier E46-equipped LM2 trucks, the E66 platform requires a dedicated ECM unlock procedure before custom programming.
What's Included in the 3.0 Duramax Delete Kit
-
OBD2 Programming Interface (MPVI Platform) – Connects to the vehicle's diagnostic port to read and flash the unlocked ECM using compatible Windows-based tuning software.
-
6 Universal Tuning Credits – Included for licensing the supported E66 ECM with the supplied programming interface.
-
Custom Tune File (Single Tune) – A vehicle-specific calibration prepared for the confirmed engine and ECM configuration, supporting the selected emissions-system hardware.
-
3.0 Duramax EGR Delete Kit – Includes application-specific hardware for removing the compatible factory EGR valve and cooler assembly.
-
3-Inch CAT & DPF Delete Turbo-Back Exhaust – Stainless steel exhaust hardware designed to replace the applicable factory catalyst and DPF sections and reduce exhaust restriction.
-
Installation Hardware – Applicable exhaust clamps, connections, and mounting components.
-
ECM Unlock Service (Optional Selection) – Professional E66 ECM upgrade service available as an ordering option.
Vehicle Compatibility
This package is intended for compatible E66 / Global B-equipped GM 3.0L Duramax pickups.
| Specification | Details |
|---|---|
| Make | Chevrolet / GMC |
| Models | Silverado 1500 / Sierra 1500 |
| Advertised Years | 2022.5–2026 |
| Engine | 3.0L Duramax Turbo Diesel |
| Engine Codes | LM2 / LZ0 — application-specific verification required |
| ECM | E66 / Global B |
| Body Style | Pickup |
| Fuel Type | Diesel |
| ECM Unlock | Required before custom tuning |
Important Fitment Note: Early 2022 trucks may use the E46 ECM, while later applications may use E66. The LM2 and LZ0 engines require different calibrations and may require different mechanical components. Vehicle compatibility must be confirmed using the VIN, engine code, ECM identification, and supplied hardware fitment before ordering. Availability for 2026 applications also requires confirmation.
ECM Unlock Service — What You Need to Know
All supported E66 / Global B applications require an ECM upgrade before custom tuning can be installed.
When selecting your configuration, choose the appropriate ECM unlock service option:
-
No – For customers whose original ECM has already received the required compatible E66 upgrade.
-
Yes – Includes the professional ECM unlock service for the vehicle's original controller.
For a new unlock, the original ECM must be removed and shipped to the designated service facility. Once upgraded and returned, it can be reinstalled and programmed using the supplied OBD2 interface.
A spare or replacement ECM should not be submitted without confirming service compatibility.
Performance & Tuning
The supplied single custom tune is prepared for the confirmed vehicle application and matching hardware.
Expected Benefits
-
Reduced exhaust restriction
-
Optimized throttle response and drivability
-
Calibration matched to the modified exhaust configuration
-
Elimination of supported regeneration requests associated with removed equipment
-
Elimination of supported emissions-system monitoring associated with the selected configuration
-
Smooth and consistent engine operation
Tuning Configuration
| Option | Details |
|---|---|
| Tune Type | Single Custom Tune |
| ECM | E66 / Global B |
| Programming | OBD2 / MPVI Platform |
| Power Increase | Application-dependent; confirm before ordering |
| TCM Tuning | Not included |
Performance results depend on the engine, original calibration, hardware configuration, and vehicle condition. No specific horsepower or fuel-economy improvement is guaranteed.
Which Configuration Should You Choose?
| Selection | Recommended For |
|---|---|
| ECM Unlock: No | Customers with an already upgraded, compatible original E66 ECM |
| ECM Unlock: Yes | Customers requiring the original E66 ECM to be professionally unlocked |
If you're unsure whether your ECM has been upgraded, contact Dieselino with your VIN and ECM details before ordering.
How the Delete Kit Works
The package combines application-specific replacement exhaust and EGR hardware with custom programming for a compatible E66 ECM.
The original ECM is first upgraded to accept custom tuning. The matched mechanical components are then installed according to the supplied instructions, and the ECM is programmed using the MPVI interface and the correct vehicle-specific calibration.
The tune supports the selected hardware configuration. It does not repair unrelated engine, turbocharger, transmission, electrical, or fuel-system faults.
Installation Information
Difficulty: Advanced
ECM Preparation: Professional unlock required before flashing.
Tools & Equipment: Standard workshop tools, appropriate exhaust installation equipment, Windows laptop, compatible VCM Suite software, OBD2 access, and a stable power supply during programming.
Professional installation is recommended due to the ECM upgrade process and application-specific mechanical requirements.
Technical Specifications
| Specification | Details |
|---|---|
| Product Type | Full DPF / DEF / EGR Delete Kit |
| Vehicle Platform | GM Global B |
| ECM | E66 |
| Programming Interface | ECU Unlock Tool |
| Compatible Interface Generation | MPVI3 / MPVI4, subject to supplied device |
| Universal Credits | 6 included |
| ECM Unlock | Required; optional service selection |
| Tune | Single Custom Calibration |
| Exhaust Diameter | 3 inches |
| Exhaust Material | Stainless Steel |
| EGR Components | Application-specific EGR delete hardware |
| Transmission Tuning | Not included |
| Intended Use | Off-road and racing |