2011-2015 LML 6.6L Duramax Applicable Products

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FAQs

With proper maintenance, the LML Duramax can last over 300,000 miles.

DPF deletes are illegal in many regions due to emissions regulations. Check local laws before modifications.

Typically 15-20 MPG depending on driving conditions and load. Upgrades may improve efficiency.

Yes, up to B20 (20% biodiesel), but higher concentrations may require modifications and could void warranties.

Ranges from 13,000 to 17,000 lbs depending on truck configuration. Performance upgrades can enhance towing power.

Upgrade the radiator, install a more efficient intercooler, and ensure proper airflow to improve cooling under heavy loads.

Yes. Removing EGR coolers and the DPF reduces backpressure significantly. Combined with a delete tune, drivers report 50–150 HP gains on the LML 6.6L depending on turbo efficiency and fuel system upgrades. The biggest gains come from eliminating the DPF restriction and tuning out the factory torque management limits built into the calibration.

An EGR delete removes only the Exhaust Gas Recirculation valve and cooler, eliminating intake coking and lowering EGTs. A full delete kit also removes the DPF (Diesel Particulate Filter) and sometimes the DEF system, maximizing exhaust flow. Start with EGR delete if you want cleaner combustion; go full delete for maximum power and eliminates all emissions-related maintenance.