This 2004 BMW E60 with a 3.0-litre diesel engine had a larger turbocharger installed. With the initial software, the dynamometer showed 209 hp and 441 Nm. After the control software was changed, the first result was 252 hp and 532 Nm, but the power curve still had a drop.

The air mass meter connector was disconnected for diagnostic testing. In that test, the dyno reading rose to approximately 280 hp and 560 Nm, suggesting that the meter could be affecting the uneven curve. The video title gives 280 hp and 560 Nm, but the discussion also says that torque calibration still needed further work.

The measurement with the sensor disconnected should therefore be treated as a diagnostic check, not proof that a final calibration with the sensor operating correctly had already been completed.