What’s a Diesel Particulate Filter (DPF)?

A Diesel Particulate Filter is designed to reduce diesel particulate or soot from the exhaust in to the atmosphere.  DPF’s are fitted to nearly all modern diesel engine cars and vans.

Diesel Particulate Filters regularly burn off the gathered particulates with the use of a catalyst or by running an built in engine program inside the cars brain or ECU. When the DPF is full the ECU tells the engine to inject extra fuel into the combustion process thus causing the exhaust temperature to increase. Once the exhaust temperature reaches a level that incinerates the trapped soot in the filter, it begins to remove the accumulated particulate. This is known as regeneration.

How would I know if my DPF is blocked or not working ?

If the DPF is beginning to block the performance of the vehicle begins to suffer resulting in lower fuel efficiency, loss of engine power and eventually complete engine failure.

A block will be indicated on the dashboard of your vehicle by a warning light.

How do they get blocked?

DPFs can block for several reasons, not always the fault of the Diesel Particulate Filter itself. A blocked DPF could be as a result of any of the following;

  • Sensor failure – There are several sensors on the vehicle that gather information such as exhaust pressure and DPF temperature. These sensors help the engine to identify when a block is occurring and an automatic regeneration is necessary.
  • Engine under performing – If the engine is not working to its maximum efficiency due to an underlying fault, this can cause the filter or regeneration process to under perform.
  • Incorrect fuel/oil – By putting incorrect fuel or oil into the car or van you may present the filter with unexpected particles that the filter membrane may struggle to capture appropriately and these particles may not combust during the regeneration process.

What are the benefits of DPF removal / delete?

With the DPF removed from your vehicle, not only are you eliminating the possibility of the filter becoming blocked resulting in a substantial replacement cost, but you will experience greater fuel economy along with better engine performance from your vehicle. This is because the build-up of exhaust pressure on your engine is much lower and this allows the engine to work under less strain, requiring less power and fuel.

What’s involved in removing the DPF?

Removing the Diesel Particulate Filter from your vehicle can vary from very easy to highly complicated depending on the model. It is essential the DPF is removed from your car, more importantly, we do not simply replace your DPF housing with a straight pipe like the less ethical tuning companies do.

This outdated method will definitely cause problems down the line when now the new legislation is in effect and fail the MOT.

We perform the more professional method to solve this problem. This way, takes a little longer but it is worth the extra effort. The vehicle will look standard to all external inspections retaining its value in the future.  Once filter has undergone our modification, the final step is reprogram the ECU to update the software on the vehicle to make it compatible with our process.

Contact Us

If you are experiencing problems with your DPF Advanced Tuning may be able to eliminate the fault in a matter of hours with a routine and effective procedure.

Call our DPF Removal / DPF Delete team today for free expert advice.

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 Written by Chris Fisher
Advanced Tuning Technical advisor
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