DPF/DEF/EGR Delete for 2017-2023 6.6L Duramax L5P 2500HD 3500HD All-in-One Kit

Fitment

• 2017-2023 L5P 6.6L Duramax Diesel GMC Sierra 2500 HD
• 2017-2023 L5P 6.6L Duramax Diesel GMC Sierra 3500 HD
• 2017-2023 L5P 6.6L Duramax Diesel Chevrolet Silverado 2500 HD
• 2017-2023 L5P 6.6L Duramax Diesel Chevrolet Silverado 3500 HD
  
• Does NOT fit Cab & Chassis

SPETUNER 6.6L Duramax L5P DP-Back must be paired with downpipe, as the factory downpipe has an integrated SCR assembly and cannot connect directly. 

⚠️ Important Notes

• For 2017-2023 L5P models: CAN BUS plug is required for proper vehicle operation. (Click to buy)
• For 2017–2018 L5P: GM E41 ECM unlock service or pre-unlocked ECM is mandatory prior to tuning.
• For off-road, race, or competition use only
• EZ LYNK tuning files require 7–10 business days to process.DO NOT install delete components before tuning is flashed.
  
• Custom tunes are non-refundable once delivered
• The tuner may ship separately from other items

Description

Unlock the full potential of your 6.6L Duramax L5P engine with this all-in-one delete kit. It includes the EZ LYNK tuner, EGR delete hardware, and high-flow DPF delete exhaust options to improve exhaust flow, reduce restrictions, and boost performance for off-road and race use.

The 6.6L Duramax L5P is a powerhouse, but factory emissions systems can hold it back. This kit removes those restrictions, enhancing engine efficiency and delivering smoother power on both road and track.

Key Features

All-in-One Performance Kit
Includes the EZ LYNK tuner, custom tunes, EGR delete components, and your choice of DPF delete exhaust in a complete, matched system, delivering a seamless upgrade for your 6.6L Duramax L5P truck.

EZ LYNK Cloud-Based Tuning
Quickly flash your truck, monitor real-time data, and manage tunes with the user-friendly EZ LYNK platform, putting full control of your truck’s performance right at your fingertips.

Enhanced Exhaust Flow & Lower Backpressure
By removing the restrictive factory DPF and EGR systems, this kit helps your Duramax L5P engine breathe easier, resulting in improved throttle response, increased power, and reduced exhaust gas temperatures (EGTs).

Durable DPF Delete Exhaust
Choose from multiple exhaust configurations, all made from high-quality T409 stainless steel known for its excellent corrosion resistance and durability, ensuring long-lasting performance whether for daily driving or high-performance use.

Built for Off-Road and Race Use
Engineered specifically for competition or off-road vehicles where emissions equipment removal is permitted, allowing for more power, better fuel efficiency, and increased performance in extreme conditions.

EZ Lynk Tuning Options

• Single Tune (Stock Optimized) — Perfect for one-time flashes or fleet use. Retains factory safety limits while enhancing drivability and overall performance. Speed limiter removed.
• SOTF Tune Package — Switch-On-The-Fly between up to 5 performance levels, providing full support for varying performance demands.

Note: Tuning does NOT support PTO units.

Quick 60-Second Setup

• Simply plug the EZ Lynk device into the vehicle’s OBD2 port.
• Download the EZ Lynk Mobile App (iOS or Android).
• Connect via Wi-Fi to begin cloud-based tuning instantly.

Advanced Diagnostics

• Complete OBD scan tool functionality.
• Monitor, record, and share real-time vehicle data.
• Read and clear Diagnostic Trouble Codes (DTCs).
• Perform over-the-air firmware updates.

Electronic Logging Device (ELD)

• FMCSA compliant for easy log management.
• Supports the upload of receipts and inspection documents.
• Facilitates communication between drivers and fleet managers via the app.

Comprehensive Support

• Unlimited access to the tune file library.
• Continuous cloud-based tuning support for Duramax L5P trucks.

Device & Software Compatibility

• Web Portal: Access tunes from any modern browser.
• EZ Lynk App: Supports iOS 12.0+ and Android 8.0+.

What’s Included

1. EZ LYNK Tuner Device

Custom Tune File — Choose One:

• Single Tune
• SOTF (Switch-On-The-Fly) Tune

2. EGR Delete Kit

3. DPF Delete Pipe — Choose One (T409 Stainless Steel):

• 4" DPF Race
  
• 4" Downpipe-Back
• 5" Downpipe-Back
• 5" Downpipe-Back w/ Muffler
  

Installation

2017-2023 6.6 Duramax L5P EGR Delete Kit Installation Guide

2017-2023 6.6 Duramax L5P DPF Downpipe Back Delete Installation Guide

EZ Lynk Tune Package Installation Guide

Q: How do I select the right DPF Delete Pipe?
A: Select based on your performance goals and sound preference. 4" systems are best for daily driving with a balanced exhaust tone, while 5" systems offer superior airflow and a more aggressive exhaust sound. Muffler versions help reduce drone, whereas race versions are louder and more aggressive.

Q: What's the difference between Single Tune and SOTF Tune?
A: Single Tune offers a fixed performance calibration, while SOTF (Switch-On-The-Fly) enables you to switch between multiple performance levels while driving, giving you increased flexibility and control.

Q: How long does it take for the EZ Lynk tuner to ship?
A: The tuner typically arrives within 5–10 business days and may ship separately from other items.

Q: Is this kit street legal?
A: No. This kit is intended for off-road, race, or competition use only where emissions equipment removal is legal. Make sure to check your local regulations before purchasing.

Q: Is professional installation necessary?
A: Yes. Professional installation is highly recommended to ensure proper fitment, correct tuning, and safe operation.