This 2012 BMW F30 with a 2.0-litre diesel engine had a heavily restricted DPF and an EGR operating issue. Diagnostic logs showed increased exhaust backpressure. A smoke reading alone was therefore not enough to assess the condition of the filter and engine management system.

The Bosch EDC17 ECU software was read in Bench mode and checked. Mechanical work was then carried out on the DPF housing and catalytic converter. The video also shows work on the ECU calibration, but it does not publish specific map parameters or dynamometer results.

After the work, the car was started and checked on a road test. The video reports that no warning lights were on and that the vehicle was operating normally. It does not provide a precise smoke measurement or confirmation that the car passed a roadworthiness inspection, so neither result can be treated as verified.