Full Delete Kit w/ EFI Live Auto Cal V3 Tuner | GM/Chevy Duramax 6.6L LML | 2015.5-2016

Description

What’s Included

This All-in-One bundle combines tuning, exhaust, and emissions hardware in one complete package for the late LML diesel platform.

Vehicle Compatibility

This LML delete kit is designed for:

• Years: 2015.5, 2016
• Make: Chevrolet / GMC
• Models: Silverado 2500HD, Silverado 3500HD, Sierra 2500HD, Sierra 3500HD
• Engine: 6.6L Duramax LML
• Body style: Pickup truck
• Exhaust connection: 3-bolt flange
• Transmission: Allison automatic
• Application: Off-road and competition use

The kit is designed specifically for late-production 2015 and 2016 HD models and matches the factory 3-bolt exhaust connection.

How work?

The 2015, 2016 LML Duramax delete kit w/ EFI Live Auto Cal V3 tuner combines mechanical removal with custom ECM tuning. The selected exhaust replaces the factory DPF, CAT, and DEF/SCR aftertreatment section, while the EGR hardware removes the valve and cooler from the recirculation system. EFI Live tuning changes the required factory emissions strategies and adjusts engine operation for the modified hardware. Reduced restriction can improve exhaust flow, throttle response, boost response, and overall engine efficiency.

Features

This GM/Chevy Duramax LML delete kit uses professionally prepared EFI Live calibration files rather than generic canned tuning. AutoCal V3 supports flashing, data logging, custom tune delivery, and future file revisions through the supported tuning workflow.

The package also allows the exhaust to be configured around the truck: retain more factory pipe with the Delete Pipe or upgrade to a full 4-inch or 5-inch system. Optional TCM tuning can be selected to coordinate Allison transmission behavior with increased engine torque. The factory CCV system remains part of regular engine service.

Tuning & Settings

The Duramax LML full delete kit provides five available engine power stages:

Actual horsepower, fuel use, and reliability depend on vehicle condition, selected tune, supporting upgrades, load, tires, and driving style.

Optional Add-Ons

• Add TCM Tune – adds transmission calibration to improve shift behavior and coordinate the Allison with the selected engine tune.
• No TCM Tune – engine tuning only.
• Delete Pipe – replaces the factory aftertreatment section while retaining more of the original exhaust.
• 4-Inch Exhaust System – balanced upgrade for improved flow and practical sound.
• 5-Inch Exhaust System – larger exhaust for deeper sound and maximum flow.
• No Muffler – provides a louder, more aggressive exhaust note.
• With Muffler – reduces overall volume and highway drone.

Key Benefits

Up to +200 HP – five tuning stages allow the owner to match power to the truck’s intended use.

Custom EFI Live Calibration – tunes are built around the supported vehicle setup rather than using one universal file.

Configurable Exhaust – the 2015 & 2016 LML Duramax delete kit offers Delete Pipe, 4-inch, and 5-inch configurations.

Optional Transmission Tuning – TCM calibration can improve transmission response when higher horsepower and torque are selected.

Reduced Soot and Restriction – EGR removal limits soot recirculation while the freer-flowing exhaust improves gas movement through the system.

Installation Information

Installation instructions are included. A mechanically experienced owner can install the system using metric sockets and wrenches, ratchets and extensions, a torque wrench, penetrating oil, an exhaust sensor socket, coolant-handling tools, and safe lifting equipment.

A complete exhaust and EGR installation typically takes approximately 3-5 hours. Corroded hardware or limited access around the EGR cooler can extend installation time.

EFI Live AutoCal V3 connects through the vehicle’s diagnostic port for reading and flashing. Maintain stable battery voltage during programming and save the factory file before installing the custom tune. Once the file is prepared, the flashing process is normally completed in a short programming session.

No More Emissions Codes

Correct EFI Live programming prevents supported warnings, regeneration requests, limp mode, and derate conditions caused by the removed emissions components. Normal diagnostics for unrelated engine, fuel, turbo, transmission, wiring, and sensor failures remain active.

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 ECM strategy and installed tune.