6.7 Powerstroke Shift-On-The-Fly (SOTF) Switch (Purple/Gray) – Fish Tuning FTFord2020-2021Spec

Unlock true on-demand control of your custom tunes with the Fish Tuning FTFord2020-2021Spec Shift-On-The-Fly (SOTF) switch for 2020–2021 Ford 6.7L Powerstroke Super Duty trucks.

This 5-position switch lets you change performance maps while driving—no laptop, no reflash, and no need to stop. Simply turn the knob to select the tune that matches the situation: economy, light tow, heavy tow, street performance, or max power. The switch communicates the selected position to your tuner by presenting calibrated resistance values through the sensor circuit.

Key Features

• Instant Shift-On-The-Fly capability for multi-tune setups
• Compatible with EZ LYNK and SCT tuning platforms
• Connects to the Charge Air Cooler (CAC/IAT) sensor or Fuel Temperature sensor
• Uses specific resistance values for precise, reliable tune selection
• Clean, straightforward installation with high-temperature wiring
• Purple/Gray finish for easy identification

Fitment

2020–2021 Ford F-250 / F-350 / F-450 / F-550 with 6.7L Powerstroke

Important Notes

This is a hardware interface only. It does not contain tunes. Your ECM must already be flashed with SOTF-enabled custom tunes from a compatible tuner for the switch to function. Always verify with your tuner that this specific resistance configuration (FTFord2020-2021Spec) matches your tune files before ordering or installing.

Pair it with a professional multi-tune calibration and you’ll have the right power level available the moment you need it—whether you’re empty, towing, or chasing power.