4"/5" 2011-2016 LML DPF Delete Race Exhaust Pipe Chevy GMC 6.6L Duramax

4"/5" 2011-2016 LML 6.6 Duramax DPF Delete Kit

This 4"/5" 2011-2016 LML 6.6 Duramax DPF Delete Kit is crafted for those serious about getting the most out of their Chevy/GMC. By eliminating the DPF, your exhaust system will have less backpressure, better fuel efficiency, and fewer DPF maintenance issues. For off-road and race use only.

Fitment

2011-2016 Chevrolet Silverado / GMC Sierra 6.6L LML Duramax 2500HD 3500HD

Note: 2011-2015 models use a V-band clamp to secure the downpipe to the turbo-direct pipe, 2015.5-2016 models switch to a 3-bolt flange connection for the downpipe. Make sure to double-check your truck’s clamp type before ordering to get the right fit.

Product Specifications

Available in 4" and 5" diameter sizes to fit your specific performance needs. The 4-inch option offers balanced power, while the 5-inch inlet maximizes airflow for higher performance, making it ideal for towing. 

Every DPF delete race exhaust is made from T-409 stainless steel, known for its durability and corrosion resistance. T-409 is magnetic.

This DPF delete pipe kit includes everything you need for a complete installation, including clamps, hangers, and mounting hardware.

What is DPF & Benefits of Removing it

The Diesel Particulate Filter (DPF) has been a standard feature in diesel trucks since 2007. Over time, soot accumulates on the filter and causes performance problems like increased backpressure and less airflow. Removing the DPF boosts fuel flow, increases fuel efficiency, and delivers more power & torque.

Installation Guide

👉 How to Install LML 6.6L Duramax DPF Delete Kit/Exhaust System - Step-by-Step Guide

Tools and Prep
All you’ll need are basic hand tools, making this an ideal DIY project. While a lift makes things easier, it’s not required. Please confirm whether your model has a V-band or 3-bolt flange connection to ensure the best fit.

Tuning Requirement
Tuning is essential for ensuring optimized performance and full compatibility with the new exhaust setup. Please tune your vehicle before removing OE exhaust.

FAQs

Q: Why do I need a DPF delete?
A: Removing the DPF reduces restrictions in your exhaust system, allowing for increased power, better fuel economy, and fewer maintenance headaches.

Q: What’s the difference between DPF delete and DEF delete?
A: DEF delete removes the Diesel Exhaust Fluid system, while DPF delete removes the Diesel Particulate Filter. DPF delete directly boosts performance by cutting down exhaust restriction, so you get more noticeable gains in power and fuel economy.

Q: Do I need a tuner after DPF delete?
A: Yes, you’ll need a tuner to keep your truck’s engine and exhaust in sync. This prevents error codes and ensures everything runs smoothly with the new system.

Q: Is the LML Duramax a good engine?
A: Known for its durability and performance, the LML Duramax is a popular choice among diesel enthusiasts. Paired with this DPF delete kit, you can unlock even more of its potential for years to come.

Q: Which years of the LML Duramax should I avoid?
A: Some early 2011 models have been known to have DPF issues. With a DPF delete kit, you can bypass these problems and enjoy a more efficient exhaust system.

Q: How can I prevent CP4 fuel pump failure in the LML?
A: Using high-quality fuel and changing filters regularly helps. Removing the DPF reduces pressure on the fuel system, which can help extend the life of the CP4 pump—a known issue for this engine.

Q: What does the "DPF race pipe" mean?

A: "DPF race pipe“also called "DPF Delete Pipe", it only removes the DPF and keeps all other parts in the OE exhaust system.

Q: What does "DP-back/Downpipe-back" mean?

A: A Downpipe-back exhaust system runs from the downpipe all the way to the end of the exhaust pipe, replacing everything from the downpipe outlet back. This typically includes the mid-pipe, catalytic converter (if present), and muffler.

Q: What does "Turbo-back" mean?

A: A Turbo-back exhaust system runs from the turbocharger all the way to the end of the exhaust pipe, replacing everything from the turbocharger outlet back. This typically includes the downpipe, mid-pipe, catalytic converter (if present), muffler, and tailpipe.

Q: What is your DPF made from? Stainless steel or aluminum?

A: They are made of 409 stainless steel.

Q: Do your DPF deletion kits need to purchase additional parts?

A: No, this kit comes with all the parts to complete the DPF deletion.

Q: Can your Dp-back pipe work with stock parts?

A: Yes, our Dp-back pipe can fit perfectly with the stock Downpipe and stock bolts.

Q: Why do some of your DPF delete kits not work on cab and chassis models?

A: The Cab & Chassis has a relatively longer chassis and requires a tube specifically designed to fit the Cab & Chassis model. We mention Cab & Chassis in the title of our products for Cab & Chassis models, so you can check for yourself. For further assistance, you can contact our customer service.

Fast & Free 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 & Free 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.