This 2016 Audi Q7 3.0 TDI was checked before and after its Stage 1 software calibration. The DPF, EGR and AdBlue systems remained in place. The video gives initial figures of 272 hp and 600 Nm; after the work, the dynamometer recorded 303 hp and 692 Nm. The increase reported in the video is about 40 hp and 110 Nm.

Data logs were recorded before and after calibration to check turbo boost, fuel delivery and other engine parameters. The technicians considered most readings satisfactory. However, a DPF-related parameter under high load drew attention: the reading was about 620–630 mbar before the work and around 700 mbar afterwards. The video also says regeneration had taken place about 74–75 km earlier and the soot level was around 7 g.

These figures are not enough to determine the filter’s condition conclusively. The elevated reading needs separate assessment, and the power result alone does not prove that the DPF is in ideal condition. In this case, the software work was carried out with the vehicle’s existing emissions systems retained.