Full DEF Delete Kit w/ EZ Lynk Tuner | GM/Chevy Duramax LML 6.6L | 2015.5-2016

2015.5-2016 Duramax LML DEF Delete Kit

The 2015, 2016 LML DEF delete kit is an All-in-One bundle designed for late-production Chevrolet Silverado HD and GMC Sierra HD trucks equipped with the 6.6L Duramax LML diesel engine. It combines the EZ Lynk Auto Agent 3 tuner, vehicle-specific custom tuning, DPF/DEF exhaust hardware, and EGR-related components in one comprehensive solution. The package is intended for supported 2015.5–2016 models and allows the factory emissions systems to be removed while the ECU is recalibrated to operate correctly with the modified hardware.

The kit offers a delete pipe, complete 4-inch exhaust system, or complete 5-inch exhaust system, with each configuration available with or without a muffler. EZ Lynk tuning eliminates normal DPF regeneration and DEF-related operation associated with the removed systems while providing multiple available power levels. Freer exhaust flow combined with the appropriate tune can improve throttle response, boost response, and overall performance. Actual fuel efficiency, economy, and long-term reliability depend on engine condition, tune level, load, supporting modifications, and driving style.

Why Choose This Kit

• EZ Lynk Auto Agent 3 - cloud-connected tuning device for remote tune delivery, vehicle communication, live data, diagnostics, and technician support.
• Multiple Power Levels - available tunes range from Stock Optimized to +200 HP.
• Complete Delete Solution - combines the tuner, custom tune, DPF/DEF exhaust hardware, and EGR-related components in one bundle.
• Six Exhaust Configurations - choose a delete pipe, 4″ system, or 5″ system, each with or without a muffler.
• Vehicle-Specific Custom Tuning - tune files are prepared for the supported truck rather than relying on a generic preloaded calibration.

Vehicle Compatibility

The 2015-2016 LML Duramax DEF delete kit is intended specifically for the late LML platform. Because 2015 was a transition year, compatibility should not be determined by registration year only. Confirm the VIN and vehicle configuration before ordering to make sure the truck uses the supported late-2015 LML setup.

Kit Components

• EZ Lynk Auto Agent 3 Tuner - connects to the truck through the diagnostic port and links the vehicle to the EZ Lynk cloud platform. It allows vehicle information to be shared with the tuner shop, custom profiles to be received remotely, and supported ECU files to be loaded.
  • Vehicle-Specific Custom Tune - replaces the applicable factory control strategies after the DPF, DEF, and EGR systems are removed. Unlike a generic preloaded file, the calibration is prepared around the supported vehicle configuration.
• Exhaust Options
  • DPF/DEF Delete Pipe - replaces the restrictive factory aftertreatment section while retaining more of the existing exhaust system. This option is intended for customers who do not need a complete replacement exhaust.
  • 4″ Exhaust System - provides a complete freer-flowing exhaust solution with a practical balance of exhaust flow, sound, and everyday use.
  • 5″ Exhaust System - larger-diameter option for customers looking for a deeper exhaust note and a more performance-focused configuration.
  • Muffler Option - choose With Muffler for reduced exhaust volume and cabin drone or No Muffler for a straighter and more aggressive exhaust configuration.
• EGR Delete Components - remove or bypass the applicable factory EGR system so exhaust gas is no longer recirculated through the intake after the corresponding tune is loaded.
• Clamps & Installation Hardware - secure the supplied pipe, exhaust system, and related components during installation.
• Instructions & Technical Support - cover EZ Lynk device setup, vehicle linking, tune delivery, flashing, and basic mechanical installation.

Tuning & Performance

The LML DEF delete kit w/ EZ Lynk Auto Agent 3 Tuner coordinates the mechanical removal of the DPF, DEF, and EGR hardware with the ECU changes required for correct engine operation. After the factory components are removed, the vehicle-specific tune changes the strategies that would otherwise continue requesting DPF regeneration, DEF dosing, EGR flow, and related emissions-system functions.

The EZ Lynk Auto Agent 3 connects the truck to the tuning shop through the EZ Lynk platform. Vehicle data can be reviewed remotely, the appropriate tune can be delivered through the cloud, and the owner can load the calibration through the diagnostic connection.

Available Power Levels

The LML DEF delete kit can also provide freer exhaust flow, improved throttle response, elimination of normal regeneration cycles, and more direct power delivery. Higher-horsepower tunes place additional load on the engine, transmission, turbo, and fuel system, so maximum settings should only be used on a mechanically sound truck with suitable supporting components.

Fuel economy may improve under some conditions because regeneration events and exhaust restriction are removed, but a specific MPG increase cannot be guaranteed.

Installation

Installing the EZ Lynk DEF delete kit for LML Duramax requires both mechanical exhaust work and electronic tuning. Typical tools include metric sockets and wrenches, extensions, penetrating oil, exhaust tools, safe lifting equipment, a compatible smartphone or tablet, internet access, and a stable battery charger during programming.

The typical installation process is:

1. Connect the EZ Lynk Auto Agent 3 to the truck.
2. Link the vehicle with the tuning shop.
3. Submit the requested vehicle information and modifications.
4. Receive the correct custom tune through the EZ Lynk platform.
5. Remove the factory DPF/DEF exhaust section.
6. Install the selected delete pipe, 4″ exhaust, or 5″ exhaust.
7. Install the applicable EGR-related components.
8. Load the custom tune through EZ Lynk.
9. Verify normal operation and check vehicle data after programming.

An experienced diesel owner can complete the installation, but professional assistance is recommended if exhaust work, EGR removal, or ECU programming is unfamiliar.

Ordering Information

Before ordering, confirm the VIN, model year, engine, transmission, tire size, and relevant engine or fuel-system modifications. Then select the required exhaust configuration and muffler option.

EZ Lynk tuners and custom tuning typically require approximately 3–4 business days for processing. Delete pipes and exhaust systems generally ship within approximately 5–6 business days, while EGR hardware typically requires around 5 business days. Components may ship separately because the tuner and mechanical parts can be fulfilled from different locations.

Technical support is available Monday through Friday, 9:00 AM–4:00 PM PST for product selection, EZ Lynk setup, tune delivery, programming, and installation questions.

Custom tune files, activated or programmed devices, and other customer-specific products may become non-returnable once processing has begun. Eligible unused hardware requires prior return authorization and must meet the applicable return conditions.

This package is intended only for lawful off-road, racing, or competition applications. The customer is responsible for complying with applicable emissions laws.