Most modern diesel vehicles are equipped with a particulate filter of one of two types to comply with environmental regulations:
- DPF (Diesel Particulate Filter) – closed-type particulate filters;
- FAP (Filtre à Particules) – closed-type particulate filters with a regeneration function.
The particulate filter is structurally similar to a catalytic converter – it is a metal cylinder with a honeycomb ceramic core capable of trapping soot particles.
The accumulated soot is supposed to be "burned off" by high-temperature exhaust gases (from 400 to 700 °C) when the engine is under load. However, often in urban driving cycles, the soot accumulated in the filter does not have time to burn off, and the particulate filter fails. As a result, fuel consumption increases, power decreases; or the engine may go into limp mode, in which case the DPF/FAP warning light comes on.
Considering the high cost of a new filter, it is often more cost-effective to remove it if necessary. Driving with a faulty particulate filter can lead to more serious engine damage, so the problem should be addressed immediately after detection.
Specialists at the ISTOCHNIK MOSHNOSTI studio will properly remove the particulate filter from the exhaust system and adjust the engine control unit to operate without the particulate filter, which will restore engine power and reduce fuel consumption.
