2011 - 2016 Chevy/GMC 6.6L LML Duramax

MAXIMIZE YOUR 2011 - 2016 LML DURAMAX PERFORMANCE WITH QUALITY PARTS

The 2011 - 2016 LML Duramax stands as one of GM’s most refined diesel engines. With its 6.6L displacement and strong Allison transmission, the Duramax LML has a reputation for both power and reliability. Designed to meet tougher emissions standards while still delivering top-tier performance, the LML Duramax is a workhorse built for heavy towing, hauling, and off-road durability.

While the 2011 - 2016 LML Duramax is a solid platform from the factory, there’s always room to push the performance even further. Whether you're after more horsepower, improved fuel economy, or better overall handling, Diesel Power Products has the LML Duramax parts you need to get the job done. From upgraded exhaust systems to fine-tuned performance chips, we carry the best parts to take your truck to the next level.

KEY UPGRADES FOR YOUR 2011 - 2016 DURAMAX LML

When it comes to upgrading your 2011 - 2016 LML Duramax, you’ll want to start with the essentials that provide the most immediate boost to performance:

• Tuning and Performance Chips for LML Duramax: Custom tuning is one of the quickest ways to unlock extra horsepower and fuel efficiency. With a performance chip, you can fine-tune your Duramax LML to suit specific driving needs—whether you’re towing, off-roading, or just want better throttle response on the highway.
• Exhaust Systems for 2011 - 2016 LML Duramax: Replacing your stock exhaust with a high-flow system improves airflow, reduces backpressure, and lowers EGTs (Exhaust Gas Temperatures), resulting in more efficient engine operation and an increase in horsepower.
• Cold Air Intakes for LML Duramax: Installing a cold air intake allows your engine to pull in cooler, denser air, which helps with combustion and leads to gains in both power and fuel efficiency. This upgrade can have a noticeable impact on the performance of your 2011 - 2016 LML Duramax.
• Injectors for Duramax LML: Over time, stock injectors can lose their edge. Upgrading to high-performance injectors helps ensure optimal fuel delivery, restoring lost horsepower and improving overall fuel economy in your LML Duramax.
• Suspension Upgrades for LML Duramax: Whether you’re towing heavy loads or taking your truck off-road, suspension upgrades help improve ride quality, handling, and stability. For the 2011 - 2016 LML Duramax, a suspension upgrade can make a noticeable difference in comfort and performance.

WHY CHOOSE DIESEL POWER PRODUCTS FOR LML DURAMAX PARTS?

At Diesel Power Products, we know that performance matters. That’s why we only carry the best LML Duramax parts—from injectors and exhaust systems to cold air intakes and performance chips. Our team of diesel experts understands the ins and outs of the 2011 - 2016 LML Duramax, and we’re here to help you find the perfect parts to meet your specific goals.

What sets Diesel Power Products apart? It’s our dedication to quality, performance, and customer service. We don’t just sell parts; we stand behind them. Every part we offer has been tested and selected based on performance, durability, and reliability. Whether you're looking to increase horsepower, improve towing performance, or upgrade your truck’s suspension, we’ve got the parts and expertise to make it happen.

SHOP 2011 - 2016 LML DURAMAX PARTS AT DIESEL POWER PRODUCTS

Ready to take your 2011 - 2016 LML Duramax to the next level? We’ve got everything you need, from high-performance injectors and cold air intakes to exhaust systems and more. Whether you're after more power, better fuel efficiency, or improved handling, we’ve got you. Not sure which parts are right for your Duramax LML? Check out our FAQs or give us a call for expert advice.

We get a lot of calls and e-mails each day with various product, vehicle, and installation questions. Some are completely off the wall and can even catch us off guard at times, but many others are fairly routine, so we thought we'd post some of the most popular questions that can hopefully be a good resource for you.

Q: I have an EFILive AutoCal for my earlier Duramax. Can that same tuner work on my LML Duramax?
A: In short, yes!(Except L5P's) Autocals get linked to the tuners computer so if you are not getting the same company's tunes, you must get it unlocked first by the original tuner so it can be locked to the new tuner. After that, a new VIN license must be purchased to open up a slot on the tuner. And tunes must be purchased for the new vehicle. They would be sent to your e-mail along with instructions to load them onto the tuner.

Q: What are the most common 2011 - 2016 LML Duramax problems?
A: While the 2011 - 2016 LML Duramax is known for its durability, like any engine, it has a few common issues. Some of the most reported LML Duramax problems include injector failure, DEF (Diesel Exhaust Fluid) system issues, and EGR valve clogging. The DEF system, in particular, can be prone to freezing in colder climates, leading to flow issues. Additionally, some owners have experienced piston cracking, especially under heavy towing loads. Staying on top of regular maintenance and considering high-performance upgrades, like better injectors and tuning, can help prevent some of these problems and keep your Duramax LML running strong for the long haul.

Q: How can I improve the performance of my 2011 - 2016 LML Duramax?
A: Improving the performance of your 2011 - 2016 LML Duramax can be done through several strategic upgrades. First, a performance chip will let you fine-tune your truck's power levels and fuel economy based on your driving needs, whether you're towing or hitting the open road. A cold air intake is another great way to boost performance by delivering cooler, denser air to the engine, improving combustion. Finally, upgrading the injectors can restore lost power and fuel efficiency. With these upgrades, your Duramax LML will run more efficiently and deliver the performance you're looking for.

Q: Are parts for the 2011 - 2016 LML Duramax readily available?
A: Yes, parts for the 2011 - 2016 LML Duramax are widely available, and Diesel Power Products offers a comprehensive selection of LML Duramax parts to keep your truck performing at its best. Whether you’re in need of maintenance parts like injectors or are looking for performance upgrades like a cold air intake or exhaust system, we’ve got you covered. Our team of experts can also help guide you in selecting the best parts for your specific application.

Q: What should I consider when upgrading my 2011 - 2016 LML Duramax?
A: When upgrading your 2011 - 2016 LML Duramax, it’s important to think about what you want to achieve. If you’re looking to boost power, upgrading to high-performance injectors and installing a performance chip will help. If you're after better airflow and fuel efficiency, consider upgrading to a high-flow exhaust system and adding a cold air intake. For those who regularly tow heavy loads, suspension upgrades are a must. Whatever your goals, Diesel Power Products has the LML Duramax parts to meet your needs and help you get the most out of your truck.

Q: Will a DPF (Diesel Particulate Filter) back system provide more sound to my truck?
A: Generally speaking no, the emissions equipment upstream will still act as a muffler. However, that doesn't mean installation will not help in other areas by improving exhaust flow. While minor, the benefits are noticeable, plus an aftermarket exhaust looks way better than the stock exhaust.

Q: I'm looking at an exhaust kit on your website, but it doesn't state which cab and bed configuration it fits, will this fit my application? A: In most cases, unless it is specifically stated as fitting a certain configuration, all exhaust kits on our website will fit all cab and bed lengths. Further, most kits will not fit cab and chassis applications unless otherwise noted.

Q: I'm looking at this 5" (or other) exhaust kit, but my truck only has a 4" exhaust now. Does this 5" exhaust include an adapter / reducer?
A: Yes, the exhaust systems we sell will adapt down to fit the application at the designated starting point (turbo back, cat back, DPF back, etc.) for a hassle free installation.

Q: What are EGT's?
A: EGT stands for Exhaust Gas Temperature, which is the temperature of the exhaust leaving your engine. This measurement is typically measured before the turbo to ensure you are not overheating components. For most applications, we recommend not exceeding 1300 degrees.

Q: Will the products you offer void my warranty?
A: Some parts may void your warranty and some may not. We recommend researching the Magnuson-Moss Warranty Act that specifically protects consumers when choosing to install aftermarket components on their vehicles, as well as consulting with your local dealer.

Q: Do you offer smoke and lope tunes with any of your preloaded EFILive AutoCal options?
A: No we do not. In short, both smoke and lope tunes create these results at the expense of the overall reliability of your engine. The tuning companies we have chosen to partner with are top notch and are most intested in creating increased power, fuel economy, and overall drivability. We at Diesel Power Products invest a substantial amount of time and effort to ensure that the products we recommend are in the best overall interests of our customers and their trucks, and unfortunately, these types of tunes do not align with that overall goal.

If you've got a question about your Duramax, feel free to give us a call at 888-99-DIESEL and we would be happy to assist.

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