DPF/DEF/EGR All-in-One Delete Kit for 2011-2016 6.6L Duramax LML

DPF/DEF/EGR All-in-One Delete Kit for 2011-2016 6.6L Duramax LML

EZ Lynk w/Tuner Device - Non-refundable
EGR Color
DPF
$1,709.99
$1,709.99
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---tab Description---

Please Note

  • All tunes are custom and non-refundable under ANY circumstances.
  • EZ LYNK tuning files require 7–10 business days to create. DO NOT install delete parts early.
  • You may be charged import fees. Please accept the delivery and contact us at service@spelabautoparts.com to resolve any charges. Thanks!
  • Does not fit Cab & Chassis trucks.

Unlock the true potential of your 2011-2016 GM 6.6L Duramax LML. This package combines a T409 DPF Delete Pipe, EGR Delete Kit, and EZ Lynk tuner (with device and SOTF tunes) to address common factory limitations and enhance performance.

Key Features

  • Eliminates DPF & EGR Issues - Removes the factory DPF, preventing forced regenerations and engine power limiting. Deletes the EGR system to lower engine temperatures and reduce intake carbon buildup, promoting long-term reliability.
  • Customizable On-Demand Power - The EZ Lynk device with SOTF tunes allows you to switch power levels instantly (e.g., Economy, Tow, Performance) for better drivability, fuel efficiency, and significant horsepower gains.
  • Overall Performance Gains - Delivers stronger throttle response, lower exhaust temperatures, and a more robust sound. Reduces vehicle weight and eliminates the future cost of DPF/EGR system repairs.

Specification

DPF Exhaust Material T-409 Stainless Steel, it is magnetic.
Thickness 2mm thick for long-lasting durability and heat resistance.
Inlet Diameter  4.0"/5.0‘’
mandrel-bent construction Maximum flow efficiency, helping your diesel breathe easier

 

EZ Lynk Key Features

How the EZ LYNK Duramax Package Works

The Auto Agent 3 connects to your truck’s OBD2 port and links with the EZ LYNK app, giving your technician direct access for updates, troubleshooting and tune delivery via Wi-Fi. NOTE: Tuning does not support PTO units.

60-Second Simple Setup:

  • Plug the device into your Duramax OBD2 port.
  • Install the EZ LYNK Mobile App on Android or iOS.
  • Connect via Wi-Fi, and you're all set for Cloud-based vehicle tuning.

Advanced Diagnostic Scan Tool:

  • Connected OBD scan tool for you and your technician.
  • Read and clear Diagnostic Trouble Codes (DTC).
  • Perform recommended functions and install firmware updates over the air.

Cloud-Connected Tune Management:

  • Access and install tune files directly through the EZ LYNK cloud interface.
  • Switch between power levels or towing calibrations anytime, anywhere.
  • Automatic data sync ensures VIN-locked tuning integrity and reliability.

Fleet-Ready Functionality:

  • Ideal for both single-truck owners and fleet managers.
  • Share data logs, maintenance reports, and diagnostics remotely.
  • Enable multiple user access for simplified management and communication.

Platform Compatibility:

  • Web Portal: Access and manage tunes from any browser.
  • EZ LYNK App: iOS 12.0+ and Android 8.0+ compatible for wireless management.

Installation

 2011-2016 LML 6.6L Duramax EGR Delete Instruction

 2011-2016 LML 6.6L Duramax DPF Delete Instruction

 EZ Lynk Installation Instruction

---tab How to Choose---

How to Choose DPF Delete?

4” vs 5” Straight Pipe Comparison

When choosing a LML 6.6L Duramx delete pipe, the most common options are 4-inch and 5-inch straight pipes.
The 4-inch straight pipe delivers a tighter, raspier exhaust note—especially noticeable at lower RPMs—making it ideal for daily driving or mildly tuned setups where excessive drone is undesirable.
In contrast, the 5 inch straight pipe LML 6.6L Duramx offers a deeper, more refined tone with less high-pitch resonance. It excels in high-output builds and towing scenarios, where increased exhaust flow is beneficial.

Driver feedback suggests:

  • 4”straight pipe is great for stock-to-lightly-modded trucks and a quieter cabin

  • 5”straight pipe is perfect for aggressive builds, deeper tone lovers, or anyone maximizing exhaust performance

Different Types of DPF Delete

DPF Race Delete

  • Only removes the DPF (keeps stock downpipe)
  • Minimal performance gain but cheapest option
  • Best for budget-focused or emissions-testing avoidance

Downpipe-Back Delete

  • Replaces exhaust from the turbo downpipe backward
  • Improves mid-range power and throttle response
  • Good for street builds keeping stock turbo

Turbo Back Delete

  • Full system replacement from turbo outlet
  • Includes high-flow downpipe for maximum efficiency
  • Reduces turbo lag and boosts top-end power
  • Top choice for tuned/high-performance engines

Dual Exit (5" only)

  • Splits into dual exhaust paths
  • Enhances cooling and flow for extreme applications
  • Used in heavy towing or competition setups

Muffler vs. No Muffler

With Muffler

  • Tames exhaust noise for daily driving
  • Slight power restriction (~5-10HP)
  • More likely to comply with local noise laws

Straight Pipe (No Muffler)

  • Loud, aggressive exhaust note
  • Unrestricted flow for max horsepower
  • Often illegal for street use (noise/emissions)
  • Reserved for off-road/race applications

---tab Fitment---

  • 2011-2015 Chevy / GMC Duramax Diesel LML. Silverado and Sierra pickup trucks. 
  • 2015.5-2016 Chevy / GMC Duramax Diesel LML. Silverado and Sierra pickup trucks. 
  • Does not fit Cab & Chassis trucks.

---tab Shipping & Returns---

Fast Shipping Policy

Your order will be dispatched within 1-2 business days, and the package will arrive within your order's estimated date. Click for Shipping Policy

Easy Return Policy

Every order comes with a 14-day free return, which means you don't have to pay for a return slip. Click for Return Policy

DPF/DEF/EGR All-in-One Delete Kit for 2011-2016 6.6L Duramax LML

$1,709.99

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More about this stand-out feature.

  • ACHIEVING

    4.8

    average rating

  • With

    95%

    positive reviews

  • LESS THAN

    3%

    return rate

Does it come with a warranty?

Yes, most products we sell are backed by the manufacture's warranty. Warranty coverage varies by brand, so check the product listing or contact us if you have any questions before purchasing.

What happens if I don't like it?

If you're not completely satisfied, we're here to help. Eligible unused items may be returned within 30 days of delivery, subject to our return policy and applicable restocking fees.

How fast is shipping?

We process most orders within 1-2 business days. Shipping times vary by product availability and location, but most customers receive their orders within 3-7 business days after they ship.

What's the returns policy?

Returns must be requested within 30 days of purchase, Items must be new, unused, and in their original packaging. Approved returns are subject to a 30% restocking fee. Custom order, electrical, and special order items may not be eligible for return.

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