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

4"/5" 2011-2016 LML 6.6 Duramax DPF Delete Kit - Unleash the Full Power of Your Chevy & GMC

Vehicle Fitment - Compatible Chevy & GMC Models

This kit is designed for Chevy Silverado and GMC Sierra 2500/3500 HD models from 2011 to 2016. Here’s how to make sure it’s a match for your truck:

· 2011-2015 Models: These use a V-band clamp to secure the downpipe to the turbo-direct pipe.

· 2015.5-2016 Models: Midway through 2015, Chevy/GMC made a design switch to a 3-bolt flange connection for the downpipe.

So, 2015 or 2015.5?
2015 was a split year, with early 2015 models using the V-band style and mid-2015 (2015.5) switching to the 3-bolt flange. Make sure to double-check your truck’s clamp type before ordering to get the right fit.

Why Consider DPF Delete for Your LML 6.6 Duramax?

This 4"/5" 2011-2016 LML 6.6 Duramax DPF Delete Kit is crafted for those serious about getting the most out of their truck. Built specifically for Chevy and GMC diesel trucks, this kit unlocks performance by reducing backpressure, improving fuel efficiency, and cutting down on those costly maintenance issues that DPF systems often bring.

What is a DPF, and Why Should You Delete It?

The Diesel Particulate Filter (DPF) has been a standard feature in diesel trucks since 2007. While it helps reduce emissions, it also causes performance problems: more backpressure, clogging over time, and the need for constant maintenance. Removing the DPF changes that by boosting fuel flow, increasing efficiency, and delivering smoother, more powerful performance every time you drive.

The Difference Between DPF and DEF Delete

If you’re wondering, DEF delete removes the Diesel Exhaust Fluid system, while DPF delete removes the particulate filter itself. Both impact emissions, but DPF delete goes straight to the source of exhaust restriction, giving you noticeable gains in fuel economy and power. If performance is your goal, this DPF delete kit is the upgrade your LML Duramax has been waiting for.

Product Details and Specifications

· Inlet Diameter Options: Available in 4" and 5" sizes to fit your specific performance needs. The 4" option offers balanced, everyday power, while the 5" inlet is all about maximizing airflow for higher performance, making it ideal for off-roading or towing.

· Material: Made from T-409 stainless steel, known for its durability and resistance to corrosion. Unlike T-304 stainless, T-409 is magnetic, so if a magnet sticks, don’t worry—it’s authentic.

What’s in the Box?
The kit includes everything you need for a complete installation, including clamps, hangers, and mounting hardware. This is a fully-equipped package, so you don’t have to chase down extra parts.

Benefits of DPF Delete - Why GMC DPF Removal is Worth It

Fuel Efficiency Boost
DPF removal frees up your exhaust system, allowing fuel to flow more smoothly. You’ll notice a significant improvement in fuel economy—think 20-30% more miles per gallon, depending on your driving style and conditions.

Lower Maintenance Costs
With the DPF gone, so are the frequent cleanings, repairs, and eventual replacements it demands. This translates to fewer trips to the shop and less cash spent on keeping your truck in top shape.

More Power and Torque
Removing the DPF reduces exhaust backpressure, which gives your engine the breathing room it needs to perform at its best. The result? More torque and horsepower. This is the performance boost you’ll feel, whether you’re towing, off-roading, or just want that extra power on the open road.

Installation Guide - Getting Your Duramax DPF Delete Kit Set Up

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. Before you get started, confirm whether your model has a V-band or 3-bolt flange connection to ensure the best fit.

Installation Steps

1. Position your truck safely and gather your tools.

2. Attach the DPF delete kit to the exhaust system and secure it with the provided clamps and hangers.

3. Complete the installation using the included mounting hardware.

4. If necessary, reuse some factory hardware for a secure fit.

Important Note: Tuning Requirement
After DPF removal, your truck will need a compatible tuner to prevent check engine lights or error codes. Tuning is essential for ensuring smooth operation, optimized performance, and full compatibility with the new exhaust setup.

This 4"/5" 2011-2016 LML 6.6 Duramax DPF Delete Kit is the solution for those who want a more powerful, efficient, and low-maintenance truck. By improving exhaust flow, cutting fuel costs, and freeing you from constant maintenance, this kit is a solid investment for your Duramax’s performance. Don’t wait to feel the difference—upgrade your truck today and see what it can truly do.

Q: Why do I need a DPF delete?
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?
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?
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?
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: How do you clean the DPF on a Duramax?
DPF systems require regular cleaning, but with this DPF delete kit, you can skip that hassle and keep your engine running clean without constant upkeep.

Q: Which years of the LML Duramax should I avoid?
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?
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", only removes the part of DPF and keeps other parts.

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

A: This means that the 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: This means that the 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: Our DPF delete kit comes with all the parts to complete the DPF deletion, normally, there is no need to purchase anything else.

Downpipe-Back/Dp-back pipe

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

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

Cab & Chassis

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.