This 2008 BMW E60 3.5d had been remapped previously, and the owner wanted to check the car’s actual output on a dynamometer. About six months earlier, AutoChip had revised the software to improve engine operation and address previously observed smoke and uneven power delivery.

The main purpose of this visit was to measure the result of that work. The video title gives 351 hp and 684 Nm, compared with factory figures of 285 hp and 580 Nm. The stated increase is 66 hp and 104 Nm.

A dyno test provides a numerical assessment of work already carried out. The video notes that no pronounced smoke was observed during the power test; this describes the result for this particular car.