The three-cylinder Dragon engine fitted to the Mk8/8.5 Fiesta ST utilises a VDE (Variable Displacement Engine) setup which deactivates one of the three cylinders seamlessly when on light throttle, or coast-down, in order to help with fuel-efficiency and reducing Co2 output.

However, most of us petrolheads have heard the slightly odd misfiring sound this activation causes, which can be a annoying and when an aftermarket exhaust is fitted, is amplified considerably. 

This revised calibration option allows existing FLASHlink customers to de-activate the VDE and prevent this noise from occurring.

Please specify your vehicle VIN in the notes section when checking out. A modified version of your Stage 01 or Stage 02 calibration will be made available for you to install.

Please note: you will require a ZERONINE DESIGN Stage 01 or Stage 02 upgrade to be able to install this companion calibration. Phone shown for illustration of FLASHlink app only, and is not included.