This 2004 BMW E46 320d with a 2.0-litre diesel engine and EDC16C31 ECU was tested before and after a power calibration. The quoted factory figures are 150 hp and 330 Nm; the initial dyno run produced 147.3 hp and 342 Nm. The car has a manual gearbox.

Dyno results and observations

After calibration, several dyno runs produced approximately 182–190 hp and 427–430 Nm. The video shows repeat runs with small variations. The owner’s request included work on EGR and the intake manifold swirl flaps.

A light bluish smoke was noticed after the power test. Its cause was not established; an inspection of the turbocharger and possible oil in the intake tract was recommended. That inspection had not been completed in the video.