This Audi A5 2.7 TDI arrived for a power increase and EGR programming. A DPF warning appeared after the ECU file was written. The owner mainly drove the car in town and said they had not noticed a DPF regeneration during roughly two years of ownership.

Inspection of the exhaust system revealed a badly damaged and melted DPF core. Some of the material had fallen into the exhaust pipe, and a rubber component above the filter had overheated and started to melt. This condition can restrict exhaust flow and affect turbocharger operation.

The video shows the filter inspection, but not the completion of the repair. The planned next steps were to remove the exhaust system, clean out the debris, and only then continue restoring the vehicle and tuning its power.