DPF / FAP / ADD Blue Filters


This is the internal of the Diesel particle  filter also know as DPF.

  1. 1.Exhaust gas input
    2.Filter layers
    5.Pressure sensor

Wall-flow diesel particulate filters usually remove 85% or more of the soot, and under certain conditions can attain soot removal efficiency approaching 100%. Some filters are single-use, intended for disposal and replacement once full of accumulated ash.


Left Side Damaged Filter – Right side Good filter

Some filters are single-use, intended for disposal and replacement once full of accumulated ash. Others are designed to burn off the accumulated particulate either passively through the use of a catalyst or by active means such as a fuel burner which heats the filter to soot combustion temperatures.


Possible Dash board indications when dpf is damaged

This is accomplished by engine programming to run (when the filter is full) in a manner that elevates exhaust temperature In conjunction with an extra fuel injector in the exhaust stream that injects fuel to react with a catalyst element to burn off accumulated soot and convert it to ash where it is stored in the DPF filter,[3] or through other methods. This is known as “filter regeneration”. Cleaning is also required as part of periodic maintenance, and it must be done carefully to avoid damaging the filter.

Failure of fuel injectors or turbochargers resulting in contamination of the filter with raw diesel or engine oil can also necessitate cleaning.[4] The regeneration process occurs at road speeds higher than can generally be attained on city streets; vehicles driven exclusively at low speeds in urban traffic can require periodic trips at higher speeds to clean out the DPF.[5] If the driver ignores the warning light and waits too long to operate the vehicle above 40 miles per hour (64 km/h), the DPF may not regenerate properly, and continued operation past that point may spoil the DPF completely so it must be replaced.[6] Some newer diesel engines, namely those installed in combination vehicles, can also perform what is called a Parked Regeneration, where the engine increases RPM to around 1400 while parked, to increase the temperature of the exhaust.

Damaged Fuel injectors


Unlike a catalytic converter which is a flow-through device, a DPF retains bigger exhaust gas particles by forcing the gas to flow through the filter;[2][24] however, the DPF does not retain small particles and maintenance-free DPFs break larger particles into smaller ones. There are a variety of diesel particulate filter technologies on the market. Each is designed around similar requirements.

Removal Steps.

  • Ensure that the dpf is Damaged by visual and electronic inspection.
  • Make a forced regenaration if possible, save clear all the dtc codes that are stored.
  • Removed the Dpf filter and keep all the sensors connected as stock.
  • Install the new pipe without starting the engine.
  • Send us the original file along with the dtc codes that were present.
  • Write the modified file in the ecu and start the car.
  • Drive the car for at list 20 kilometers and recheck the ecu with diagnostics.
  • Switch off and switch on ignition after the driving.
  • Make a last visual inspection of the installation and deliver the car to the client.

A lot of tuners will tell you that they can disable those Faulty valves and filters but only a few know exactly what has to be really done.

Those systems can damage your engine if they are in bad shape and condition.Diesel particle filters are often damaged due to bad fuel quality and same goes for egr valves.

If your country emission control regulations allow you to remove that filter then we disable it for you.There will be no DTC and No Regeneration after the complete removal.