Our Duramax category is dedicated to all things Duramax diesel. We have tons of upgrade guides, engine problems, DPF deletes, and everything between for the Duramax 3.0L, L5P, LB7, LBZ, LLY, LML, and LMM diesel engines. Check out some of our content like the best Duramax L5P performance mods and the most common 3.0 Duramax problems. Scroll down for more content or check out our individual Duramax categories for a specific engine.
GM released the 3.0 Duramax in 2019 in its half-ton Sierra and Silverado 1500 trucks. It essentially filled the gap in between the higher end 5.3L and 6.2L V8 engine and the full-size 6.6L Duramax L5P that is only offered in heavy duty trucks. It offers better fuel economy and a torque band more accommodating…
An upgraded intercooler is the best reliability upgrade or supporting mod for the Duramax LB7. While it won’t provide big power gains like the other bolt-on mods, it will help keep EGTs and engine temps lower while also providing more consistent performance. Whether you are stock or heavily modified an intercooler will provide great performance…
The LML engine got a major overhaul in 2011, compared to the previous LMM Duramax engine. It featured nearly 60% freshly designed parts, only leveraging a portion of the previous engine design. Up to this point, all of the previous Duramax’s had some internal weaknesses and common problems with bending rods and cracking pistons. The…
The exhaust system on the Duramax LB7 is one of the most restrictive parts with respect to performance. If you are looking to increase power, especially if you are tuned, an exhaust is one of the best LB7 upgrades. With power gains ranging from 20-30+whp and 40-60+wtq an upgraded exhaust will provide big power gains,…
If you’re looking to add a bit of extra power to your Duramax LB7, a tuner or programmer is hands-down the best bet. Tuning will unlock the biggest horsepower gains for a relatively inexpensive price, making it the best bang-for-your-buck LB7 modification. In addition to adding upwards of 100whp and 150+wtq tuning will provide better…
An upgraded downpipe is one of the best performance upgrades for the Duramax LBZ. It provides power gains, lowers EGTs, improves turbo spool, and improves engine efficiency. Overall, it is one of the best performance and reliability upgrades available to these engines. With experience manufacturing performance downpipes for the LBZ, we’re going to give you…
One of the best performance upgrades for the Duramax LML is a 3″ downpipe. A downpipe will help reduce exhaust backpressure, providing good power gains in addition to lower EGTs, faster turbo spool, better gas mileage, and more. Through our performance brand, Boosted Performance, we’ve been making downpipes and performance products for Duramax engines for…
While the Duramax LLY was an unquestionable improvement over the LB7, it still had a few kinks. One of the main complaints among owners is overheating, which is caused by both a restrictive intake horn and also downpipe. Upgrading the downpipe is one of the best options for preventing overheating and is also one of…
The factory intake on the Duramax LLY is really restrictive. As such, a cold air intake upgrade will add up to 15 horsepower and 25 torque while also providing benefits like lower EGTs, faster turbo spool and throttle response, and even 1-2mpg increases in fuel economy. The performance benefits and overall efficiency improvements make a…
A cold air intake can add up to 15whp and 25wtq to the Duramax LB7, among a number of other performance benefits, this makes an intake one of the best performance upgrades for these engines. Outside of just power gains you get improved gas mileage, better throttle response, and faster turbo spool. Ultimately, it creates…
Outside of ECM tuning, a cold air intake is one of the best upgrades for the Duramax LMM. The factory intake box is restrictive which leads to power gains, improved efficiency, some fuel economy improvements, and better throttle response when it is upgraded to a more free flowing intake system. We’ve been manufacturing cold air…
Engine tuning is the best performance upgrade for a Duramax LMM. A simple plug-and-play tuner, or custom tuning, can easily add over 100+ horsepower and 200+ torque. Additionally, you get a number of other benefits like increased gas mileage, better towing, transmission tuning capabilities, and a more efficient engine overall. There are a lot of…
