mountune Optimized Accessport Calibration - Fiesta ST

Renew and maximize the performance of your Fiesta ST. The mountune Optimized Accessport Calibration is built to your specifications based on your vehicle type, modifications, and octane. Mountune Optimized calibrations go beyond the standard OTS files included with the Accessport and do not require any data logging.

Mountune Performance Calibration Slot Assignments

The mountune calibrations include 4 slots that are switchable at any time, on the fly, by simply pushing a few buttons. This is a very convenient feature that can be further adjusted in many cases.

The default settings for the Fiesta ST are laid out as such:

** Launch control & flat foot shifting can be adjusted anytime via the Accessport. By default, launch control is set at 2400 RPM and flat foot shifting is set at 4000 RPM.

Ford Fiesta ST with mountune ECU calibration compared to the stock ECU calibration.

Please Note: This offer is not a custom tuning service and is not available for turbocharger upgrades, engine swaps, upgraded cams, high-pressure fuel pumps, non-factory injectors, high-flow/catless downpipes, nitrous oxide, and other specialty fuel applications. This service is non-transferable and other restrictions may apply.