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Full Delete Kit (DPF/DEF/EGR) | GM/Chevy Duramax 6.6L LML | 2011-2015

Full Delete Kit (DPF/DEF/EGR) | GM/Chevy Duramax 6.6L LML | 2011-2015

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SKU: 22192
For off-road and race use only

Price range: $1,453 through $1,632

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Description

2011-2015 LML Duramax Delete Kit | Complete Off-Road Package

The 2011, 2012, 2013, 2014, and 2015 LML delete kit combines Mini Maxx V2 tuning with the hardware required for supported DPF, DEF, and EGR system modifications. Designed for Chevrolet Silverado and GMC Sierra pickup trucks equipped with the 6.6L Duramax LML, this complete package includes a DPF/CAT delete pipe, EGR delete components, and selectable engine power levels. The bundle is intended strictly for off road, competition, and export applications where permitted.

What’s Included

  • Mini Maxx V2 Tuner – A preloaded handheld device that connects through the OBD2 port and provides engine tuning, vehicle monitoring, diagnostic functions, and selectable power levels.
  • Preloaded LML Tune Files – Includes Stock, +50 HP, +100 HP, and +150 HP engine power settings.
  • 4″ DPF/CAT Delete Pipe – Replaces the applicable factory DPF and catalytic-converter exhaust section to create a less restrictive exhaust path.
  • EGR Delete Kit – Includes the block-off plates, fittings, hoses, and installation hardware required for the selected EGR configuration.
  • Optional High-Flow Up-Pipe – Available as a product option for customers who want to replace the factory up-pipe configuration during installation.
  • Installation Hardware – Includes the clamps, fasteners, gaskets, and supporting parts supplied with the selected bundle configuration.

Exact package contents depend on the selected product options. Review the variation details before ordering.

Vehicle Compatibility

Specification Fitment
Years 2011, 2012, 2013, 2014, 2015
Engine 6.6L Duramax LML
Chevrolet Models Silverado 2500HD and Silverado 3500HD
GMC Models Sierra 2500HD and Sierra 3500HD
Body Style Pickup trucks
Tuner Mini Maxx V2
Exhaust Configuration 4″ DPF/CAT delete pipe
Cab & Chassis Not supported
LGH Engine Not supported

Confirm the VIN, engine code, model, body style, and exhaust configuration before ordering. This package is intended for LML pickup applications and should not be selected for LGH-powered trucks or Cab & Chassis models.

How It Works

The hardware replaces the applicable factory DPF and catalytic-converter exhaust section and addresses the selected EGR components. Mini Maxx V2 is then connected to the truck’s OBD2 port to install the required engine calibration.

The tuner modifies supported ECM parameters so the truck can operate with the selected off-road hardware configuration. It also provides selectable power levels, engine data monitoring, code reading, and code clearing.

Mini Maxx V2 is preloaded, but the correct vehicle and tuning options must still be selected during installation. Follow the supplied instructions carefully and maintain stable battery voltage throughout the programming process.

Features

  • Preloaded Mini Maxx V2 tuning.
  • OBD2 installation and programming.
  • Four selectable engine power levels.
  • DPF/CAT delete pipe.
  • EGR delete hardware.
  • Optional high-flow up-pipe.
  • Engine data monitoring.
  • Diagnostic trouble-code reading and clearing.
  • Return-to-stock capability.
  • Chevrolet Silverado and GMC Sierra pickup compatibility.

Mini Maxx V2 does not provide SOTF tuning for 2011–2015 LML applications. Changing power levels requires using the tuner menu and following the device instructions.

Tuning & Settings

Mini Maxx V2 provides four preloaded engine power settings for supported 2011–2015 LML Duramax pickups.

Tune Level Power Increase Best For
Stock 0 HP Factory-like engine output with the required off-road calibration
Tow +50 HP Towing and moderate load use
Street +100 HP Daily performance and stronger throttle response
Performance +150 HP Maximum available power for supported off-road applications

Power figures are advertised calibration levels rather than guaranteed wheel-horsepower gains. Actual output depends on the truck’s condition, fuel system, turbocharger, transmission, tires, supporting modifications, elevation, and operating conditions.

The +150 HP setting places greater load on the engine and transmission and should only be used when the vehicle condition and supporting parts are suitable.

Technical Characteristics

Characteristic Expected Result Important Note
Exhaust Flow Reduced restriction through the 4″ delete pipe Depends on the complete exhaust configuration
Engine Power Up to +150 HP selectable calibration Actual output varies by truck condition and setup
Towing +50 HP Tow setting available Factory payload, axle, GVWR, and GCWR limits remain unchanged
Throttle Response May improve with the selected tune Depends on tune level and vehicle condition
Monitoring Supported through Mini Maxx V2 Available parameters depend on the vehicle
Return to Stock Supported through the tuner Follow the device instructions before removing hardware
SOTF Not supported Power levels are changed through the tuner menu

Optional Add-Ons

  • High-Flow Up-Pipe – Replaces the applicable factory up-pipe and can be installed while completing the EGR-related hardware work.
  • Standard Configuration – Includes the selected delete package without the optional upgraded up-pipe.

Choose the up-pipe option before ordering. Adding it later may require repeating part of the installation process.

Key Benefits

  • Complete LML Package – Combines tuning, exhaust hardware, and EGR-related parts in one bundle.
  • Selectable Power Levels – Choose Stock, +50 HP, +100 HP, or +150 HP through the Mini Maxx V2 menu.
  • Preloaded Tuner – No custom tune-file preparation is normally required for the supported standard configuration.
  • Reduced Exhaust Restriction – The 4″ pipe replaces the applicable factory DPF/CAT section.
  • Vehicle Monitoring – View supported engine and operating data through the Mini Maxx V2 display.
  • Diagnostic Functions – Read and clear supported diagnostic trouble codes.
  • Return-to-Stock Support – The original factory calibration can be restored through the tuner when the correct procedure is followed.

Installation Information

Mechanical installation involves removing the applicable factory exhaust sections and installing the DPF/CAT delete pipe and selected EGR components. Access to the EGR cooler, exhaust fasteners, clamps, coolant connections, and up-pipe can make the job more involved than a basic exhaust replacement.

Before starting:

  1. Confirm the truck is a supported 2011–2015 LML pickup.
  2. Connect a battery charger or maintainer.
  3. Read the Mini Maxx V2 installation instructions.
  4. Complete the required tuner programming step in the specified order.
  5. Install the exhaust and EGR-related hardware.
  6. Check all clamps, fittings, coolant connections, and electrical connectors.
  7. Start the engine and inspect for exhaust, coolant, or intake leaks.
  8. Confirm that the selected tune and monitoring functions operate correctly.

Recommended equipment includes:

  • Metric hand tools.
  • Torque wrench.
  • Penetrating lubricant.
  • Exhaust cutting tools when required.
  • Safe lifting equipment and jack stands.
  • Coolant drain and refill equipment.
  • Battery charger or maintainer.
  • Mini Maxx V2 tuner.

Installation time of the LML delete kit varies according to rust, truck configuration, experience, tool access, and whether the optional up-pipe is installed. Professional installation by an experienced diesel shop is recommended for customers unfamiliar with exhaust, EGR, coolant-system, or ECM programming work.

No More Supported Emissions Codes

After the hardware is installed and the correct Mini Maxx V2 calibration is programmed, the tuner is designed to address supported monitoring routines associated with the DPF, DEF, SCR, and EGR components covered by the package.

FAQ

Yes. Mini Maxx V2 includes preloaded tuning for supported 2011–2015 LML Duramax applications. The correct vehicle and tune options must still be selected during installation.

The available settings of the delete kit for LML Duramax 2011-2015 are Stock, +50 HP, +100 HP, and +150 HP. Actual output depends on the condition and configuration of the truck.

No. SOTF is not supported on 2011–2015 LML applications. Power levels must be changed through the tuner menu according to the supplied instructions.

Yes. The LML full delete kit supports compatible GMC Sierra 2500HD and Sierra 3500HD pickups equipped with the 6.6L LML Duramax, as well as compatible Chevrolet Silverado models.

No. This configuration is intended for pickup trucks and does not support Cab & Chassis or LGH-engine applications.

Yes. Mini Maxx V2 supports restoring the saved factory calibration when the correct return-to-stock procedure is followed.

The device may remain connected for monitoring, but permanent connection is not required solely to retain the programmed engine calibration.

Fuel economy may change after tuning, but no specific improvement is guaranteed. Results depend on tune level, tires, gearing, load, speed, terrain, vehicle condition, and driving style.

No. It is an optional configuration. Select it when replacing the factory up-pipe as part of the installation.

Experienced owners with the correct tools may complete the installation. Because the work involves exhaust removal, EGR components, coolant connections, and ECM programming, installation by a qualified diesel shop is recommended.