This Chrysler 300C with a 3.0-litre diesel engine had already been tuned by another workshop. The owner wanted to check the car's output and see whether the existing calibration could be improved. Before the changes, the dynamometer recorded 269 hp and 615 Nm.

Changes had already been made to the exhaust and emissions-control systems, so the work focused on the engine control unit calibration. The existing software was revised, and the car was tested on the dyno again.

The video concludes with a result of 296 hp and nearly 680 Nm. Compared with the initial measurement, this is a clear increase following the revision of the previous calibration.