2011-2016 LML 6.6 Duramax EGR Delete Kit

2011-2016 LML 6.6 Duramax EGR Delete Kit

LML EGR Delete Kit fits 2011-2016 GMC Sierra and Chevrolet Silverado 2500/3500 6.6L Duramax Diesel diesel models. Designed to enhance vehicle performance and optimize fuel economy, this kit is available in black, red and silver color options and is not available on Cab & Chassis models. Please confirm compatibility before installation to ensure the best installation effect.

Fitment

• 2011 GMC Sierra 2500/3500 6.6L Duramax Diesel
  
• 2012 GMC Sierra 2500/3500 6.6L Duramax Diesel
• 2013 GMC Sierra 2500/3500 6.6L Duramax Diesel
• 2014 GMC Sierra 2500/3500 6.6L Duramax Diesel
• 2015 GMC Sierra 2500/3500 6.6L Duramax Diesel
• 2015.5 GMC Sierra 2500/3500 6.6L Duramax Diesel
• 2016 GMC Sierra 2500/3500 6.6L Duramax Diesel

• 2011 Chevrolet Silverado 2500/3500 6.6L Duramax Diesel
  
• 2012 Chevrolet Silverado 2500/3500 6.6L Duramax Diesel
• 2013 Chevrolet Silverado 2500/3500 6.6L Duramax Diesel
• 2014 Chevrolet Silverado 2500/3500 6.6L Duramax Diesel
• 2015 Chevrolet Silverado 2500/3500 6.6L Duramax Diesel
• 2015.5 Chevrolet Silverado 2500/3500 6.6L Duramax Diesel
• 2016 Chevrolet Silverado 2500/3500 6.6L Duramax Diesel
  

Key product features

Comprehensive removal of the EGR system: effectively prevents EGR valve clogging or leakage problems and improves engine reliability.

Accelerate turbo response: Turbo boost speed is significantly increased to ensure faster power output.

Effectively reduces exhaust gas temperatures (EGTs): Exhaust gas temperatures can be reduced by up to 200°F (approximately 93°C), protecting engine components and ideal for long-distance off-roading.

Three color options: black, red, silver, add personalized appearance options to your vehicle.

Improved cooling efficiency: Coolant circulates faster, reducing engine temperature by about 10%-15% and extending engine life.

High-quality materials: Made of stainless steel and aircraft-grade aluminum alloy, it has strong corrosion resistance and high durability.

product specifications

Weight: approx. 1.45 kg

Color options: black, red, silver

Material: Stainless steel & aviation grade aluminum alloy

Performance Data and Benefits

Improved fuel efficiency: Reduce fuel consumption and increase fuel economy by 5%-10%, providing better fuel performance for off-road and long-distance driving.

Higher power output: Increased 15-20 horsepower, making the off-road experience more enjoyable.

Optimize the cooling effect: effectively reduce the coolant temperature, make the engine run more stably, and extend the life of components.

Reduced exhaust temperature: After removing the EGR system, the exhaust temperature is greatly reduced, effectively reducing the load on the engine.

Installation guide

How to Install EGR Delete on LML Duramax: A Step-by-Step Tutorial

Installation time: Estimated 6-8 hours, no intake manifold required.

Professional installation recommendations: To ensure the best installation results, it is recommended that professional technicians be installed.

ECU Custom Tuning Required: For maximum performance, the ECU needs to be tuned after installation to unleash the full potential of the system.

Applicable environment: This product is only suitable for off-road or track driving and is not suitable for daily road use.

Legal statement

This product is limited to off-road driving or non-public road environments. Installation of this product may cause the vehicle to fail to comply with local emission standards. Please confirm applicable legal requirements before purchasing. Any liability resulting from improper use is the sole responsibility of the user.

FAQs

Q: After installing this EGR deletion kit, can the vehicle be used on daily roads?

This product is for off-road and off-highway driving only, and the vehicle may not comply with emission regulations on public roads after installation. Please confirm the usage scenario.

Q: Does installation require professional technicians?

In order to ensure the best effect and safety of the product, it is recommended that professional technicians install it. After installation, the ECU needs to be customized and adjusted.

Q: What color options are available?

This product is available in three colors: black, red and silver. You can choose according to your personal preference and vehicle color matching.

Q: Will the vehicle warranty be affected after installation?

Installing the EGR deletion kit may affect the original factory warranty policy. It is recommended to consult the vehicle dealer or understand the relevant policies before installation.

2011-2016 LML 6.6 Duramax EGR/DPF Delete Kit

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. 

Short Description

Unlock the true potential of your 2011-2016 LML 6.6L Duramax. This DPF/EGR delete kit eliminates restrictive DPF and EGR systems, delivering significant gains in horsepower, torque, and fuel economy while ensuring a cleaner, more efficient engine.

Key Features

• Significant Performance Gains: Experience a dramatic increase in horsepower and torque, along with improved throttle response and elimination of turbo lag.

• Enhanced Fuel Economy: By removing the restrictive exhaust filtration and stopping the fuel-intensive regeneration cycles, you can see MPG improvements of 2-5 MPG.

• Improved Engine Longevity: Eliminates EGR soot and carbon recirculation, reducing carbon buildup on intake valves and pistons. Lowers Exhaust Gas Temperatures (EGTs) for a healthier, longer-lasting engine.

• Premium Construction: All pipes and components are constructed from heavy-duty, T409 stainless steel for superior corrosion resistance and durability.

• Simplified Maintenance: Drastically reduces the cost and complexity of future maintenance by removing the most expensive and failure-prone parts of the emissions system.

• Tuner Required for Installation: Installing a LML 6.6L Duramx delete pipe requires more than just swapping out hardware. When removing of the DPF, CAT, SCR, and/or DOC involves removing and eliminating emission related sensors. A DPF delete capable tuner is required to prevent any check engine light or diagnostic trouble codes from setting.

How to Choose a DPF Delete?

4” vs 5” Straight Pipe Comparison

• 4-inch Straight Pipe: Produces a tighter, raspier exhaust note—especially noticeable at lower RPMs. Ideal for daily driving or mildly tuned trucks where excessive drone is undesirable.
• 5-inch Straight Pipe: Delivers a deeper, more refined tone with less high-pitch resonance. Better suited for high-output builds and towing applications, where improved exhaust flow is beneficial.

Driver Feedback Summary

• The 4" pipe works well for stock or lightly modified trucks and a quieter cabin.
• The 5" pipe is perfect for aggressive builds, deep-tone enthusiasts, and those maximizing exhaust performance.

Types of DPF Delete Kits

DPF Race Delete

• Removes only the DPF (retains stock downpipe)
• Offers minimal performance gains but is the most budget-friendly
• Best for cost-conscious users or avoiding emissions testing

Downpipe-Back Delete

• Replaces the exhaust from the turbo downpipe back
• Improves mid-range power and throttle response
• Ideal for street builds using the stock turbo

Turbo-Back Delete

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

Dual Exit (5" only)

• Splits into dual exhaust paths
• Enhances cooling and flow for extreme conditions
• Commonly used in heavy towing or competition setups

Muffler vs. No Muffler

With Muffler

• Reduces exhaust noise for daily driving
• Slight power restriction (~5–10 HP)
• More likely to comply with local noise regulations

Straight Pipe (No Muffler)

• Loud, aggressive exhaust tone
• Unrestricted flow for maximum horsepower
• Often not street-legal due to noise and emissions rules
• Intended for off-road or race use only