Frequent regeneration after an aftermarket DPF installation

An aftermarket particulate filter had been installed on this Volkswagen about a year earlier. During this visit, diagnostics showed that DPF regeneration was starting every 17–18 km. Around 18 km after the previous regeneration, the recorded soot load had reached 23 grams.

According to the video, the injectors and EGR had been replaced, as had the thermostat. The temperature sensors and engine oil were checked. The workshop carried out a forced regeneration to reduce the soot accumulated in the filter.

The owner was asked to drive around 50 km and return for another diagnostic check. The video does not show the results of that follow-up, so the aftermarket filter’s condition and the cause of the frequent regeneration remain unconfirmed.