GM/Chevy Duramax

About

The Duramax lineup on this page spans two very different engines: the LMM, built from mid-2007 through 2010, and the LML, built from 2011 through 2016. Both ran in the Chevy Silverado and GMC Sierra heavy-duty trucks, but GM redesigned the emissions system between them, the LML added the SCR/DEF setup that the LMM never had. The core delete hardware doesn't cross over between the two generations: an LMM truck and an LML truck need entirely separate tuners, EGR deletes, and exhaust components, no matter how close the model years look. If your truck falls in the 2008, 2009, or 2010 range, you're working with an LMM the base GM/Chevy Duramax 6.6 LMM Full Delete Bundle for that generation starts from $2,134. 2011 through 2016 trucks including 2013, 2015, and 2016 model years run the LML instead, where the equivalent GM/Chevy Duramax 6.6 LML Full Delete Bundle starts from $1,990. The $144 gap between the two floors comes down to which parts each generation actually needs, not one bundle being more complete than the other. This collection isn't only the two full bundles. A passenger-side up-pipe ($215) fits either generation outright, and universal add-ons stainless exhaust tips from $99, and Optimal Flow mufflers at $150 or $175 depending on pipe size work on top of an LMM or LML build alike. If you want to monitor boost and EGT (Exhaust Gas Temperature) after the delete, the Edge Insight CTS3 runs $575, or $819 with the EGT probe kit. Because the LMM-to-LML switch happened mid-production, model year alone can be misleading the engine code stamped on your build sheet is the reliable way to know which parts you need. And removing certified emissions equipment carries real federal exposure regardless of how the truck is used the Clean Air Act test is about the vehicle's original certification, not where you drive it.

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