This 2005 BMW E60 with a 3.0-litre diesel engine arrived with DPF and EGR system issues. After work on these systems or their software controls, the car was first tested without a power-increase calibration. At this stage, the dynamometer showed 239 hp and 535 Nm.

An engine control program was then written and the car was tested again. The video gives a final result of approximately 310 hp and 648–649 Nm. This comparison starts from the vehicle’s condition after the DPF and EGR work, not from a completely unmodified factory setup.

Taking measurements at each stage helps distinguish the result after the system work from the additional increase after ECU calibration.