Duramax Delete Kit Bundles | 2004-2023

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Quick Answers: Duramax Delete Kit Bundles | 2004-2023

  • What is the best delete kit for an LML Duramax?

    The LML Duramax (2011-2016) requires a delete kit that handles the full emissions stack GM added to meet EPA 2010 heavy-duty standards: EGR cooler and valve, DPF, DOC, and the full SCR/DEF system. A proper LML kit includes billet block-off plates for both EGR passages, a mandrel-bent delete pipe, DEF emulator, and a tune that kills regen cycles and DEF injection simultaneously.

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  • What is the difference between an LML and LMM delete kit?

    Let's dive into this one. The LMM (2007-2010) predates the SCR/DEF system — GM added that with the LML in 2011 to meet EPA Tier 2 and California standards. An LMM delete kit covers EGR and DPF only. An LML kit must also address the full SCR stack. They are not interchangeable. If you run an LMM kit on an LML, you'll miss the DEF system entirely.

  • Does a 2015 Duramax delete kit fit a 2013 Duramax?

    Yes — both the 2013 and 2015 Silverado/Sierra run the LML Duramax with the same emissions architecture. GM did not substantially change the EGR cooler layout, DPF canister, or SCR placement between the 2011-2016 LML production run. A kit built for one LML year will fit the full generation without modification.

  • What does a 2008 Duramax delete kit include?

    The 2008 Silverado and Sierra ran the LMM Duramax, which used a DPF and EGR system but no SCR or DEF injection — that came in 2011. An LMM delete kit covers the EGR cooler bypass or block-off, the DPF delete pipe, and a supporting tune. The LMM is a simpler delete than the LML and one of the most commonly modified platforms in the heavy-duty Duramax world.

  • Will deleting an LML Duramax cause any long-term engine issues?

    Done correctly with a proper tune, an LML delete typically reduces heat load on the engine. The EGR system recirculates hot, soot-laden exhaust gases into the intake — removing it lowers intake charge temperatures and reduces piston ring and valve wear. Eliminating DPF regen cycles also removes the fuel dilution that occurs when raw diesel is injected to burn off soot.