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

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

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SKU: 23315
For off-road and race use only

Price range: $1,583 through $2,051

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Proven power gains.

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Description

What’s Included

Component Description
EFI Live AutoCal V3 Tuner Flash-and-data device used to transfer the supplied custom calibration to the ECM and record data logs when tuning support is required.
Custom Engine Tuning Provides stock-level through +200 HP calibrations and adjusts supported DPF, DEF/SCR, and EGR strategies for the modified off-road system.
EGR Delete Kit Includes the valve and cooler removal components, block-off hardware, gaskets, and supporting parts required for the EGR system.
Exhaust Option Choose a DPF Delete Pipe, 4-inch Exhaust System, or 5-inch Exhaust System to replace the restrictive factory CAT and particulate-filter section.
Installation Hardware Includes the clamps, fittings, and connections required for the selected exhaust configuration.

This All-in-One bundle combines the major mechanical components and tuning device into one complete diesel package.

Vehicle Compatibility

This GM/Chevy Duramax LML delete kit fits:

  • Years: 2011, 2012, 2013, 2014, 2015
  • Make: Chevrolet / GMC
  • Models: Silverado 2500HD, Silverado 3500HD, Sierra 2500HD, Sierra 3500HD
  • Engine: 6.6L Duramax LML
  • Body style: Pickup trucks
  • Exhaust connection: V-band
  • 2015 fitment: Early-production model with V-band connection
  • Application: Off-road use

Late-2015 trucks with the later 3-bolt connection require the corresponding 2015.5–2016 hardware. Verify the flange before ordering rather than relying only on registration year.

How work?

The 2011, 2012, 2013, 2014, 2015 Duramax LML delete kit w/ EFI Live AutoCal V3 tuner coordinates physical emissions removal with matching ECM calibration. The selected pipe or exhaust removes the factory DPF, CAT, and DEF/SCR aftertreatment restriction, while the EGR hardware removes the valve and cooler from the recirculation path. EFI Live tuning changes the required engine-control strategies and provides a software bypass for supported emissions monitoring associated with the removed system. The result is freer exhaust flow with improved throttle and boost response.

Features

The package uses professionally prepared custom EFI Live files instead of one generic canned tune. AutoCal V3 can flash the ECM, store the applicable files, and provide data logging when further tuning information is needed.

The 2011-2015 Duramax delete kit also allows the exhaust configuration to match the build: retain more factory hardware with a Delete Pipe or upgrade to a larger 4-inch or 5-inch downpipe-back system. The factory downpipe remains upstream of these exhaust options.

Normal CCV, cooling, fuel-system, and engine maintenance remain necessary for long-term reliability.

Tuning & Settings

Five engine power settings are available:

Tune Setting Power Increase Intended Use
Stock 0 HP Factory-level commanded power
Level 1 +50 HP Mild daily-driving upgrade
Level 2 +100 HP Stronger street and towing response
Level 3 +150 HP Higher-output performance
Level 4 +200 HP Maximum listed performance stage

The custom calibration is what helps unlock the selected power level; higher stages place additional load on the Allison transmission, turbo, cooling, and fuel systems.

Characteristic Result
Power Range 0 to +200 HP
Exhaust Diameter Options Delete Pipe, 4-inch, or 5-inch
DPF Regeneration Eliminated after correct hardware removal and tuning
Exhaust Restriction Reduced compared with the factory aftertreatment
Fuel Economy No fixed MPG or percentage is guaranteed; results depend on tune, load, tires, gearing, and driving style
Towing Improved usable response is possible; factory tow ratings remain unchanged
Installation Time Approximately 2–3 hours for a straightforward pipe setup or 3–5 hours for a full exhaust and EGR installation

Optional Add-Ons

  • Add TCM Tune — adds transmission calibration to coordinate Allison behavior with the selected engine tune.
  • No TCM Tune — retains the existing transmission calibration.
  • DPF Delete Pipe — removes the filter section while retaining more of the original exhaust.
  • 4-Inch Exhaust System — larger-flow upgrade with a balanced sound level.
  • 5-Inch Exhaust System — larger steel exhaust for increased volume and a deeper tone.
  • No Muffler — provides the most aggressive exhaust sound.
  • With Muffler — reduces overall volume and highway drone.

Key Benefits

Up to +200 HP — multiple stages allow the owner to choose power based on the truck’s condition and intended use.

Custom Calibration — the tuner supports vehicle-specific files rather than forcing every engine to use one universal map.

Reduced Exhaust Restriction — the LML DPF/DEF/EGR delete kit removes restrictive factory aftertreatment components and can improve flow and response.

Cleaner Intake Path — EGR removal stops exhaust gas and soot from continually passing through the cooler and intake.

Configurable Package — exhaust size, muffler choice, and optional TCM tuning allow the setup to be built around the vehicle.

Installation Information

An installation guide is supplied with the package. An experienced DIY mechanic can complete the work using metric sockets and wrenches, extensions, a torque wrench, penetrating oil, an appropriate sensor socket, coolant-handling equipment, safe lifting equipment, a Windows computer, and battery support for ECM programming.

Plan approximately 2–3 hours for a tuner plus straightforward Delete Pipe installation and 3–5 hours for the complete exhaust and EGR job. Corrosion or difficult cooler connections can increase the time.

EFI Live AutoCal V3 uses a Windows-based flashing workflow. Save the stock file when instructed, maintain stable battery voltage, and do not interrupt programming.

No More Emissions Codes

Correct tuning prevents supported dashboard warnings, regeneration requests, limp mode, and derate conditions caused by the removed emissions equipment. Normal diagnostic code monitoring remains active for unrelated engine, transmission, turbo, fuel, wiring, and sensor faults.

Common applicable code families include:

  • DPF: P2002, P242F, P2452, P2453, P2458, P2459, P2463, P246C
  • EGR: P0401, P0402, P0403, P0404, P0405, P0406, P2457
  • DEF/SCR: P203B, P204F, P205B, P207F, P208A, P20B9, P20BA, P20EE, P229F

Exact DTC coverage depends on the installed ECM calibration.

FAQ

The delete kit for LML Duramax 2011-2015 combines EFI Live tuning, EGR removal hardware, several exhaust options, and optional transmission tuning in one matched package. The best configuration depends on how the truck is used and the desired performance level.

The main difference is exhaust fitment. The early configuration uses a V-band connection, while 2015.5–2016 applications use the later 3-bolt flange, so the exhaust parts are not interchangeable.

AutoCal V3 provides custom tune flashing, file transfer, stock-file handling, and data logging. It is a compact device designed to work with professionally prepared vehicle-specific calibrations.

Available settings are 0, +50, +100, +150, and up to +200 HP. The actual performance result depends on engine condition, transmission health, supporting upgrades, and selected tune.

Removing normal regeneration and reducing exhaust restriction may improve efficiency, but there is no guaranteed MPG or percentage increase. Load, speed, tires, gearing, maintenance, and tune choice have a major effect.

Yes. Owners familiar with diesel exhaust, coolant-system work, EGR removal, and ECM programming can perform the installation themselves. A qualified shop is recommended when those procedures are unfamiliar.