Full Delete Kit (DPF/DEF/EGR) | GM/Chevy Duramax 6.6L LMM | 2007-2010
Price range: $1,642 through $1,940
Description
LMM Duramax Delete Kit | Boost Power and Reliability
The 2007, 2008, 2009, 2010 LMM delete kit combines a T-409 stainless steel DPF and EGR delete exhaust system with custom EFI Live AutoCal V3 tuning for the GM/Chevy 6.6L Duramax. The Duramax LMM delete kit is supplied with a custom ECM calibration prepared after the complete vehicle information is submitted rather than with a universal preloaded tune. Customers can choose between an ECM-only tuning package or an ECM + TCM tuning package for supported Allison automatic transmissions. This complete bundle is intended for off road applications where permitted.
What’s Included
- EFI Live AutoCal V3 – A custom tuning interface used to read the stock file, flash the supplied ECM calibration, collect diagnostic data, and return the truck back to the saved stock file when required. The device is not shipped with a universal preloaded tune.
- Vehicle-Specific ECM Tune File – Prepared after the order using the complete VIN, year, make, model, transmission, transfer-case type, fuel-tank configuration, tire size, CCV status, and additional modifications.
- SOTF Switch – Provides four or five selectable tune positions when the supplied ECM calibration supports switch-on-the-fly tuning. SOTF is not available with a manual transfer case.
- Full EGR Valve and Cooler Delete Kit – Includes the parts required to address the factory EGR valve and cooler connections, reducing exhaust-gas recirculation and soot contamination.
- 4″ or 5″ T-409 Stainless Steel Exhaust System – Replaces the applicable factory DPF exhaust sections with a less restrictive pipe configuration. Customers can select the pipe diameter that best matches the desired sound and airflow.
- Muffler Configuration – Choose a muffled system for reduced sound or a no-muffler configuration for a louder exhaust note.
- Optional TCM Tune File – Available for supported Allison automatic transmissions. The file is loaded from a Windows laptop through EFI Live AutoCal V3 using the Cal Flash function.
One truck requires one custom tuning file. Additional supported trucks require separate tune files and an available VIN license.
Vehicle Compatibility
| Years | 2007, 2008, 2009, 2010 |
| Engine | 6.6L Duramax LMM |
| Models | Silverado 2500HD, Silverado 3500HD, Sierra 2500HD, Sierra 3500HD |
| Body Style | Pickup Truck |
| Compatibility Notes | Not compatible with Cab & Chassis models |
Ensure your vehicle’s year, engine, model, and body style match before ordering. This solution fits perfectly for those looking for an upgrade in their diesel performance.
How It Works
The first step is to read and save the stock ECM file before installing the custom calibration. The DPF exhaust sections and EGR hardware are then replaced with the selected delete parts and 4″ or 5″ exhaust system. EFI Live AutoCal V3 is used as the interface to load the vehicle-specific ECM file prepared by the tuning provider.
When the ECM-only package is selected, the custom engine calibration is flashed and the device can be disconnected after programming. When the ECM + TCM package is selected, the ECM file is flashed first, the AutoCal is unlinked from the original provider, and the device is linked to the TCM tuning provider. The transmission file is then loaded from a Windows laptop through AutoCal V3 using Cal Flash.
Features
This All-in-One bundle is designed specifically for 2007-2010 Chevrolet and GMC trucks equipped with the 6.6L LMM Duramax. EFI Live AutoCal V3 is shipped without universal preloaded tuning and is configured after the required truck information has been submitted. The system supports custom ECM files, return-to-stock functionality, switchable SOTF levels, additional truck licenses, and optional upgraded transmission calibration.
Customers can select an ECM-only package or an ECM + TCM package depending on the transmission setup and intended use. The AutoCal does not need to remain connected after the ECM or TCM file has been flashed. File preparation and device setup normally require approximately 2-5 business days after all vehicle information has been received.
Tuning & Settings
EFI Live AutoCal V3 – This device-specific tuning interface uses a device-based tuning workflow, supporting switch-on-the-fly capabilities. It allows for custom tuning tailored to your vehicle’s needs, enhancing performance and efficiency.
ECM-Only Package
| Tune Level | Power Increase | Best For |
| Stock | 0 HP | Factory-like output with the required emissions-related calibration changes |
| Level 1 | +30 HP | Mild daily performance |
| Level 2 | +65 HP | Towing and balanced off road use |
| Level 3 | +100 HP | Strong street and off road performance |
| Level 4 | +130 HP | Maximum output in the ECM-only package |
ECM + TCM Package
| Tune Level | Power Increase | Best For |
| Stock | 0 HP | Factory-like engine output with custom transmission strategy |
| Level 1 | +30 HP | Daily driving and light-load use |
| Level 2 | +80 HP | Towing and moderate performance |
| Level 3 | +120 HP | Higher-performance off road use |
| Level 4 | +150 HP | Maximum output in the ECM + TCM package |
The ECM-only package uses the Stock, +30, +65, +100, and +130 HP levels. The ECM + TCM package uses the 0, +30, +80, +120, and +150 HP ECM levels together with a separate transmission calibration. SOTF requires the supplied switch, correct wiring, and a compatible custom file and does not operate with a manual transfer case.
| Characteristic | Expected Result | Important Note |
| Fuel Economy | Approximately 3-6 MPG under favorable conditions | Results depend on tune selection, tire size, load, gearing, speed, and driving style |
| Exhaust Flow | Reduced restriction through the selected 4″ or 5″ pipe | Actual change depends on the complete exhaust configuration |
| Throttle Response | May improve with the custom ECM file | Depends on truck condition and selected tune level |
| Towing Response | A tow-oriented tune may provide more controlled power delivery | Factory towing, payload, axle, GVWR, and GCWR limits remain unchanged |
| Transmission Behavior | Upgraded shift strategy with the optional TCM package | Depends on transmission condition and supplied TCM file |
| Return to Stock | Supported through the saved stock file | The stock file must be read before custom tuning |
Optional Add-Ons
- TCM Tuning – Adds a custom transmission calibration for supported Allison automatic applications. The file is flashed from a Windows laptop through the AutoCal V3 using Cal Flash.
- Muffler Option – Reduces exhaust volume compared with the straight-through system.
- No-Muffler Option – Provides a louder and more aggressive exhaust tone.
Key Benefits
- Vehicle-Specific Custom Tuning – The ECM file is prepared using the submitted VIN and truck configuration rather than supplied as a universal preloaded file.
- Two Tuning Packages – Choose ECM-only tuning or an ECM + TCM package with transmission calibration.
- Power Levels up to +150 HP – Maximum available power depends on the selected tuning package and supporting parts.
- SOTF Capability – Supported configurations provide four or five selectable tune positions through the supplied switch.
- Return-to-Stock Support – The saved stock file can be flashed back to the truck when required.
- Professional Shop Support – Installation and tuning can be completed by an experienced owner or professional diesel shop.
Installation Information
Installation instructions are provided with the product. Mechanical installation requires experience with diesel exhaust systems, EGR hardware, cooling-system connections, electrical components, and safe vehicle lifting. Total installation time depends on rust, exhaust configuration, cab and bed length, and access to the EGR cooler.
Before starting the tuning process, download and install the EFI Live software on a compatible Windows laptop. Connect the AutoCal V3, read the stock ECM file, and save a backup before flashing the custom calibration.
For the ECM-only package:
- Read and save the stock file.
- Load the custom ECM file onto the AutoCal.
- Flash the ECM calibration.
- Confirm correct operation.
- Disconnect the tuner after programming if logging is not required.
For the ECM + TCM package:
- Flash the ECM file.
- Unlink the AutoCal from the original tuning provider.
- Link the device to the TCM tuning provider.
- Load the TCM file from the laptop.
- Use Cal Flash to program the transmission controller.
- Follow the provider’s step-by-step instructions and maintain stable battery voltage.
Recommended equipment includes a Windows laptop, EFI Live AutoCal V3, supplied tune files, battery charger or maintainer, metric hand tools, torque wrench, penetrating lubricant, safe lifting equipment, jack stands, and cooling-system tools. Professional installation is recommended for customers without experience in exhaust removal, EGR cooler work, ECM flashing, or TCM programming.
No More Emissions Codes
After the DPF and EGR parts are installed and the custom ECM calibration is flashed correctly, the tune is designed to address supported emissions-related monitoring codes associated with the specified hardware changes.
Exact code coverage depends on the ECM operating system and supplied calibration. Tuning does not repair damaged wiring, failed sensors, coolant leaks, turbocharger faults, injector problems, or unrelated engine and transmission failures.
FAQ
This 2007-2010 LMM Duramax delete kit is the best choice for the LMM Duramax because it offers comprehensive emissions system removal and custom tuning with the EFI Live AutoCal V3. It provides a significant increase in horsepower and improved fuel efficiency. The kit includes high-quality components like the T-409 stainless steel exhaust, ensuring durability and performance. With power gains of up to 130 HP, it is designed for serious performance enthusiasts.
The EFI Live AutoCal V3 tuner is known for its device-specific interface and custom tuning capabilities. It requires stock file and vehicle data to create tailored tunes, supporting switch-on-the-fly adjustments. This tuner enhances performance by optimizing engine parameters. It is VIN-locked, ensuring security and compatibility with multiple vehicles with additional licenses.
After installation and tuning, you can expect a power gain of up to 130 HP with the Max tune setting. This significant increase is achieved through the removal of restrictive emissions systems and custom tuning. The exact power gain may vary depending on vehicle condition and setup.
Yes, towing performance will improve with this LMM DPF delete kit. The Eco/Tow tune setting offers an additional 65 HP, providing the extra torque needed for better towing capability. This enhancement is ideal for those who frequently tow heavy loads and need reliable power.
Fuel economy may improve by an estimated 5-10% with this full delete and tune setup. The reduction in exhaust restriction and optimized engine parameters contribute to more efficient fuel usage. However, actual improvements may vary based on driving style and conditions.
If you have basic mechanical skills, you can install this kit yourself. The comprehensive guide provided makes the process straightforward, taking typically 3-5 hours. For those without experience, professional installation is recommended to ensure optimal performance and safety with the 2007-2010 LMM delete kit with tuner.
Full Delete Kit (DPF/DEF/EGR) | GM/Chevy Duramax 6.6L LMM | 2007-2010
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Ordering was simple and support quickly resolved an initial file issue. Exhaust install was easy and the 5-inch option sounds great. My only complaint is not knowing exactly what each tune does.
The automated device appears to be missing tune files. When attempting to load tunes, only a parent folder is visible with no further access.
Shipping showed up fast, definitely worth what I paid.
A clogged DPF had put my truck into limp mode with a massive repair quote. This setup got it back on the road. The exhaust and tuning went smoothly, sounds great, and support was responsive when I had questions.
Easy people to work with.