This 2005 BMW E61 530d with a 3.0-litre diesel engine had already been tuned by another workshop. The owner wanted to check the car's actual output because the previous calibration did not deliver the expected driving feel. The dynamometer recorded 276 hp and 537 Nm with the existing tune.

The video gives factory figures of 218 hp and 500 Nm. The initial measurement showed that power had been increased, but the gain in torque was modest. After inspecting the file, a different ECU calibration was prepared and written, and the car was tested on the dyno again.

The video title lists final figures of 310 hp and 650 Nm, but the available spoken section does not clearly confirm that post-tuning result. The exact final values should be checked against the dyno printout before publication.