26 Jan, 11

DPF Removal & Smoke-Correction Service

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DPF Removal - Smoke Correction SessionDPF Removals are becoming very common as the years progress, they continue to fail and manufacturers continue to release newer cars with Diesel Particulate Filters (DPF). The Diesel Particulate Filter (DPF) is also known as a Filtre à Particules (FAP) and some people even dealerships refer to it as CATS (Catalytic Converters) however, they should not be mistaken as they operate differently.

For more information on how a Diesel Particulate Filter (DPF) / Filtre à Particules (FAP) works, check out our DPF Removal article.

Problems after DPF Removal

Having the DPF removed is meant to bring peace of mind. After having endless battles up & down the motorway trying to regenerate your DPF, spending £100’s if not £1000’s taking it to dealerships for regenerations / oil changes and actual DPF replacements – a DPF Removal is meant to take the problem away completely & forever, leaving you with a vehicle that is reliable, efficient and responsive, with zero errors & zero problems. However, what people are left with is in many cases completely different. We’ve heard some real horror stories of people who have (before finding us), attempted to have their DPF’s removed by other “companies” and “mobile agents”, problems such as:

  • DPF Warning Light Coming Back
  • Car Going Into Limp Mode (also known as Limp Home Mode)
  • Ignition Coil Light Flashing
  • Traction Light On
  • Excessive Smoke
  • Turbo / Engine Failure
  • MOT Failure

DPF Removal - Smoke Correction Service

Why do these problems occur?

Most problems are related to the software companies & mobile agents are using.

Firstly, we are against doing MOBILE DPF Removals and the reason behind this is, the only way to do a “Mobile DPF Removal” is using an automated piece of software which scans through the cars ECU data and attempts to delete all data strings related to the DPF file structure (within pre-set parameters). However, this software can never 100% delete all data strings because they are interlinked and deep-coded with file structures relating to:

  • Fuel Rail Pressure
  • Exhaust Gas Temperature
  • Air / Fuel Ratio
  • & Many Others..

If the automated software was to delete the interlinked & deep-coded file structures, this would interfere with these sensors and cause data corruption and many errors to occur almost immediately after starting the engine. Some problems don’t actually occur for some time after the DPF has been removed.

In most cases, the automated software won’t delete these parts of the file, but then leaving part of the DPF file in place will also bring problems such as the vehicle falling back into limp mode, the DPF light coming back on, excessive smoke and as a result of this, an MOT Failure.

The Sinspeed DPF Removal ApproachDPF Removal - Smoke Correction Session

Unlike other companies & mobile agents, we do not touch any automated software. After reading and downloading the data from your ECU, we manually scan through the 1000’s of data strings looking for all DPF file structures. We then proceed to delete & modify any data strings to command the ECU that the DPF is no longer existing nor required on the vehicle for it to run correctly. On doing so, the ECU will run as it should without having a DPF on the car and will be guaranteed to not cause any errors. It is the only sure-way of a successful DPF Removal.

Furthermore, just by removing the DPF, you cannot guarantee it will pass an MOT. Although it is not illegal to remove the DPF / FAP from the vehicle, it may still fail an MOT if your vehicle does not meet the necessary smoke detection levels at an MOT test.

After having successfully removed 100% of the DPF data file structure, we then proceed to carry out a full smoke-correction session (inclusive of all DPF removals by Sinspeed). This enables us to fine-tune the system to run optimally and efficiently with no errors after having removed the DPF and by doing so, allow your vehicle to continue to pass an MOT.

We are currently the only company in the whole of the UK who offer this smoke-correction service.

If you’re looking at having your DPF Removed but you’re not sure on how this will effect the running of your vehicle or have any further enquiries, please do not hesitate to call us direct on our enquiries & booking line: 0844 847 9999

Tags : Diesel Particle Filter Removal, Diesel Particle Filter Removal MOT law, DPF Removal, DPF Removal MOT law, DPF Smoke, Excessive Smoke, Filtre à Particules (FAP), Is DPF Removal Illegal?, limp mode, MOT Failure, Removing DPF MOT Fail, Smoke after DPF Removal, The DPF Light Is Coming Back On.
72 thoughts on “DPF Removal & Smoke-Correction Service
  • Hello ,
    I had my Mechanic Remove the Dpf from my Bmw e70 530d 2007.
    What would you charge to program the car as it is smoking quite badly.

    • Hi Khurram

      Thanks for the enquiry,

      We have sent you an email – kindly respond with your postal code for a customised quotation.

      Kind Regards


  • Had dpf removed 2 months ago today car started smoking quite bad guy who did removal said he dont know why as he deleted software any ideas

    • Hello Peter

      Thanks for the enquiry,

      I’m afraid this is the sad reality now, many so-called remappers are equipping themselves with equipment and software commonly found on eBay and then going out and making modifications to the ECU on things they have no real knowledge about. Sometimes it will work and other times it can cause irreversible damage – when problems do occur, they don’t have the experience and understand of how the system works to fault-find the root cause of the problem.

      I have sent you an email with a short questionnaire, which will help us to rule out some potential issues and hopefully help identify a possible cause of the smoking issue. Of course, without seeing the vehicle in our workshop we cannot say for sure but hopefully, we can help and if you are local we can get it booked in for further investigation and then quote accordingly for any corrective repairs if necessary.

      Kind Regards


  • Hi there.
    Got An Vauxhall insignia 2009 Sri diesel.
    Every 100- 150 Miles .
    Car starting teven and massive amount smoke comes put for 15 Minutes.
    Recently has been changed – dpf sebsor.
    Intercooler and the 2 pipes.
    Ecu program by Vauxhall.
    Force Regen
    But the car start to smoke badly every 100 -130miles.
    Can you please get back to me.
    Thank you.

    • Hi Istvan

      Thanks for the enquiry,

      We’ve sent you an email – kindly respond with your postal / zip code for a customised quotation.

      Kind Regards


  • Hi could you give me a price please for, zafira b 1.9cdti 2005 dpf removel, reading your articls i take it the car wornt kick smoke out cause this is what im most concerned about, also do you do the stage one remap thanks

    • Hi Michael

      Thanks for the enquiry,

      We have sent you an email, kindly respond with your postal code for a customised quotation.

      Kind Regards


  • I have removed the DPF my seat Alhambra 62. However, There is smoke , particularly in the morning and soon when the engine got Warm it disappeared. What do you think the problem is?


    • Hi Kaiser

      Thanks for the enquiry,

      We have sent you an email – kindly respond with your postal code so that we can check and confirm what services are available in your area for this particular fault.

      Kind Regards


  • Hello i currantly own a mazda 5 diesel and i have had dpf issues, ive had dpf removal +egr blank+ stage 1 remap, since having this done ive never been happy with the result as the car smells awful on tick over and also on a run, it also smokes alot when under load, there are no warning lights on to suggest any issues and i have no performance gains at all really since having the work done, any ideas would be gratefully received.
    Many thanks
    Paul adams

    • Hi Paul

      Thanks for the enquiry,

      We can definitely help with the problems you have described. I’ve sent you an email with full information and pricing.

      Kind Regards


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