What Is A DPF
The DPF or Diesel Particulate Filter is a specific filter located in a section of your exhaust system, fitted in most modern diesel vehicles.
The purpose of the DPF is to significantly reduce the amount of polluting particles in exhaust fumes, released into the atmosphere.
The captured pollutants, soot and ash should be burned up by passive DPF regeneration, during normal driving, however to trigger regeneration the DPF must reach a high enough temperature over a long enough period of time.
For drivers doing higher mileage and longer journeys, the passive DPF regeneration normally keeps the DPF clear; however drivers doing shorter journeys and overall lower mileage often suffer with DPF blockages.
DPF Equipped Vehicles Require Extra Care
If you drive a modern diesel vehicle that incorporates a DPF (diesel particulate filter) you need to be aware that short journeys on a regular basis, may result in DPF associated problems.
In some cases the owner’s manual will provide you with details on how to force regeneration of the DPF – in many cases this will clear the DPF of accumulated particulates.
Remapping vehicles with diesel particulate filters is possible if certain technical restrictions are observed, and the driver is aware that vehicles with diesel particulate filters require more attention than vehicles without them.
Vehicles Fitted with Diesel Particulate Filters
Eventually most DPF filters will become blocked due to poor regeneration and manufacturers estimated life is often well overstated. Diesel particulate filters that no longer tolerate regeneration have to be replaced, which can be an expensive requirement.
Whilst the vehicle is under warranty this is not always an issue, but for people that have DPF failures not covered by warranty, the cost of replacement can be uneconomical.
DPF Removal | DPF Delete | Legal Situation
February 2014 new legislation made DPF removal illegal for vehicles used on the public highways, government guidelines set out in 2014 specify that all vehicles that have been previously fitted with a DPF should not have the device removed or bypassed.
Today DPF delete or removal is for off road use only.
DPF Removal | MOT
The absence of a DPF on a vehicle originally fitted with one is an automatic MOT failure.
During an MOT, your vehicle will be visually inspected for the presence of a DPF, should the examiner notice that the DPF is missing or has been bypassed they are required to fail the vehicle in question.
If your vehicle will be used off road only, or if it is intended to be exported, DPF removal or a DPF Delete is a viable possibility.
DPF Removal Benefits
- Improve vehicle performance, power and fuel economy.
- Eliminate the need for an expensive DPF replacement.
DPF Forced Regen
If your DPF is partially blocked and causing performance issues, limp mode, and engine management lights but is not responding to passive regeneration by driving at a specified RPM level and distance.
Under these circumstances a forced regeneration might be a viable option, which is carried out using a diagnostic tool function.
DPF Forced Regen Benefits
- Lower cost option
DPF Forced Regen Disadvantages
- Not always successful if DPF is significantly blocked.
- Only partially clears blockage.
- May require repeated regen in a short space of time.
- May also require oil filter and change.
DPF Clean | Professional DPF Refurbish
Not to be confused with cheap alternatives that simply remove and jet wash the dpf filter, it might appear to be a cheap solution but it’s not when it has to be done again a few weeks later because the filter hasn’t been effectively cleaned out.
Solidified DPF Deposits
Professional Cleaning involves injecting highly effective chemicals designed to dissolve solidified exhaust deposits, which are then flushed out leaving you with an as new DPF filter.
DPF blocked by Ash Deposits
Once a DPF filter has reached the stage where ash build up is blocking the filter, it is normally end of life for the DPF and results in an expensive DPF replacement.
We can now offer a cleaning solution for this eventuality, however it is not an onsite job so will involve being without your car for 2-3 days normally, but will save you the cost of a DPF replacement.
Having your DPF cleaned professionally by one of our mobile technicians will leave you with an as new DPF filter, that if subjected to regular passive regeneration (by driving as prescribed) should not cause you any further issues.
If you have a DPF issue, don’t leave it contact us immediately!
Running a vehicle with a blocked DPF filter can result in other serious damage
DPF Professional Cleaning Benefits
As long as the DPF has not been damaged beyond saving!
- Cheaper than OEM or aftermarket replacement options
- Legal alternative to DPF removal
- More effective than some aftermarket DPF replacements
- Carried out by qualified and experienced technician/mechanic
- Free advice on original cause of DPF issues and ongoing DPF care
Contact us today to discuss options for a professional DPF Solution