Tuners and monitors: the gauge is worth more than the tune
Most owners buy a tuner for power and get the most value from the monitor built into it. Transmission temperature, coolant temperature, boost and exhaust gas temperature are numbers a factory dashboard mostly does not show, and they are what tells you a truck is in trouble before it fails.
A speedometer calibrator is the other honest purchase here. Fit larger tires and the speedometer under-reads, the odometer under-counts, and the transmission shifts at the wrong road speed. Recalibrating fixes all three, and it is the one change every lifted truck on bigger tires actually needs.
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Warranty, emissions and towing tunes
Engine management changes have warranty and emissions consequences that vary by state and by manufacturer, and a tune is usually detectable long after it is removed. Understand what applies to your vehicle before buying.
If you tow, a towing tune that firms shift points and manages heat is worth more than a peak-power tune that does neither. We stock 12 tuner and monitor parts from 1 brand, matched to engine and model year.