This 2011 Volkswagen Polo with a 1.2 TDI engine and a Delphi DCM3.7 control unit was tested before and after Stage 1 calibration. The emissions systems, including DPF and EGR, were retained.

With the original software, the dyno recorded 88 hp and 203 Nm. After the ECU file was tailored and tested, the result was 110 hp and 253 Nm.

The calibration was carried out through OBD. Boost pressure, airflow, throttle position and temperature data were reviewed before the final test. The video stresses that the file was calibrated for this specific car rather than automatically applied to every similar vehicle.