Multiple tune levels in one file, switchable while you drive — built for trucks that tow one day and run empty the next.
Single & SOTF SKUs: $800–$1,900
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SOTF tunes bundle several calibrations into one file. Flip between them from your device or a switch while driving — no re-flashing required. Level names vary by platform, but buyers generally recognize a progression like Stock → Light Tow → Heavy Tow → Street → Sport.
One calibration, built for how you drive most of the time. Simpler, and often all you need if your use case doesn't change much.
Multiple levels in one file. Worth it if you tow sometimes and run empty other times, or want a street level and a safer tow level without two separate flashes.
Most modern EZ Lynk-compatible Duramax, Cummins, and Powerstroke platforms support SOTF. Availability depends on your specific year — we'll confirm honestly on your quote rather than overselling it.
Observed SKU bands run roughly $800–$1,900 depending on platform and support level.
Browse Priority Purchase Get A Custom Quote (Built Trucks)Switch-On-The-Fly. Instead of one fixed calibration, your tune includes multiple levels you can flip between on the fly — without a re-flash — while driving.
Common level names buyers already know are Stock, Light Tow, Heavy Tow, Street, and Sport — exact levels available depend on your platform and year.
Most modern EZ Lynk-compatible Duramax, Cummins, and Powerstroke trucks support SOTF. We'll confirm availability for your specific year on your quote.
If you only ever drive one way (always towing, or never towing), a Single tune is simpler and often sufficient. If your use case changes — empty one day, loaded the next — SOTF is worth the upgrade.
Yes — Priority Purchase lists Single & SOTF SKUs by platform. Not sure which fits? Ask first.
