The diesel particulate filter, referred to as the DPF, is a particle filter specially designed for modern diesel engines. This is similar to a Catalytic Converter found on many petrol engines which lowers emissions. The DPF is designed to reduce pollution by filtering out solid soot particles. As the exhaust gases flow through a honeycomb like brick 80%-90% off the soot particles are extracted. The problem is the matter removed from the gases does not break down efficiently. To help improve this, a cycle is performed by your engine control module to higher exhaust gas temperatures to burn off the build up of excess residue, this is known as a Regeneration. As the DPF accumulates particulate matter and comes to the point of a 70%-90% blockage you will experience a lack of power and fault lights on your dashboard such as the engine management light, glow plug, and dpf light. We advise not to drive the vehicle at this point to prevent any further damage.


The Hardware:

The first procedure is a full diagnostics. Once our team is happy that the fault is your DPF, they will start removing the DPF brick from the exhaust system. This can be done in some cases with a bypass replacement pipe or by removing the filter unit. This is referred to as the hardware side of the DPF system. The procedure is carefully done ensuring no damage to sensors or any other major parts of your vehicle, this procedure must be done correctly.

The Software:

This is done by deactivating the various DPF functions within the ECU to prevent any further warning lights, and Limp Mode, using the latest technology through in many cases your OBD port. Once complete the vehicle is tested, and a full diagnostics taken. The results give an increase in fuel economy & significant power gains, as the DPF brick restricts exhaust gases.

The DPF is not a legal requirement, and it is not needed for a yearly vehicle inspection test