The Duramax LMM diesel was produced from 2007-2010 and was the beginning of the emissions era for the Duramax engine family. We have Duramax LMM content ranging from tuning guides, DPF deletes, the 5 most common engine problems, and everything between. See below for more Duramax LMM diesel engine content.
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…
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…
One of the most restrictive components on the Duramax LMM is the factory downpipe. It is crushed and limits exhaust flow leading to increased backpressure. Ultimately, this leads to higher EGTs, decreased engine efficiency, and puts more stress on the turbocharger. Upgrading the factory downpipe to a larger 3″ performance downpipe is one of the…
One of the big changes to the LMM was the addition of a diesel particulate filter, or DPF system. Alongside the DPF is regeneration cycles that occur to clean the particulate filter and system. While the LMM is actually a very reliable engine, one of its most common problems is DPF failure. These engines suffer…
A few simple performance upgrades can take the Duramax LMM to over 500whp. We’re going to cover the five best mods to get it there: tuning, a cold air intake, exhaust, downpipe, and intercooler. These upgrades alone can easily add over 100whp and 200wtq, pushing the LMM up against some of its performance roadblocks. So…
GM launched the LMM in 2007.5, replacing the LBZ due to tighter emissions regulations. To strengthen emissions active regeneration was added alongside a DPF system. As is common with emissions equipment, this led to a new common problem for the Duramax LMM engine. Similar to its predecessor, the LMM has very few actual engine problems….
