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    MM3 Diesel Tuner & Monitor Combo

    MM3 is the tuning and monitoring hardware built by Calibrated Power and sold under the Smarty name, pairing a dash-mounted display with programmable tuning files for Cummins and Powerstroke diesel trucks. Owners load it with performance or economy-focused tuning files while keeping real-time gauges for boost, EGT, and transmission temps on one screen. CFM Diesel Performance carries MM3 hardware for drivers who want the horsepower and the data to back it up.

    MM3

    Why Diesel Owners Trust MM3

    MM3 hardware is built by Calibrated Power under the Smarty name and is widely used across the diesel tuning community as a platform for loading custom tuning files alongside real-time engine monitoring.

    The unit combines a dash-mounted display with programmable tuning for Cummins and Powerstroke trucks, letting owners switch between power levels and keep an eye on boost, EGT, and transmission temperature from the same screen.

    CFM Diesel Performance stocks a growing selection of MM3 tuning hardware for Cummins and Powerstroke diesel trucks below. Not sure which tuning package fits your build? Contact our team and we'll help you choose.