The owner of this 2016 Audi with a 3.0 TDI V6 complained of low power, although no visible faults were stored in the engine control unit. The DPF had previously been removed and cleaned, but the car still ran inconsistently and accelerated poorly.

A software review found that the previous file had disabled faults related to emissions systems while leaving regeneration functions active. Diagnostic information indicated that the last regeneration had taken place about 7,000 km earlier, and DPF back pressure was high.

In this case, the decision was made not to retain the DPF: it was removed and replaced with a downpipe. The ECU software was adapted to the selected exhaust configuration. Fasteners and seals were replaced during installation. The video does not show a repeat drive or a post-repair back-pressure measurement.