How To Fix Blocked Dpf With Dpf Removal And Remap?


Diesel Particulate Filters (DPF) are an essential piece of your car’s emissions system. They help reduce harmful pollutants from leaving your exhaust, making them a critical component in the fight against air pollution. However, they can become blocked over time, leading to a decrease in performance and fuel consumption.

If you’ve noticed that your car isn’t running as it should be, and you suspect that a blocked DPF may be the culprit, then you’re in luck! In this blog post, we’ll explore how to fix it with a DPF removal and remap. Read on to learn more about this process and how it can benefit you!

What Causes a DPF to Become Blocked?


There are a few things that can cause your DPF to become blocked. The most common is simply driving too little and/or too slowly. This allows soot to build up in the filter, eventually leading to a blockage. Another potential cause is an issue with your fuel injectors, which can lead to incomplete combustion and an accumulation of soot in the filter. Additionally, if you frequently drive in stop-and-go traffic, this can also contribute to a blocked DPF.

How to Remove a DPF?


There are a number of companies who offer DPF removal solutions, and many garages now offer this as an aftermarket service. If you decide to go ahead with having it removed from your car, then you will need to find a reputable company or garage to do this. You can ask around for recommendations, or search online for reviews.

Once you have found a company or garage that you trust to remove the DPF from your car, they will usually carry out the following process:

  1. They will firstly check the condition of your exhaust system and make sure that it is in good working order. If there are any issues with the exhaust system, then these will need to be fixed before the DPF can be removed.
  2. The next step is to disconnect the electrical connection to the DPF.
  3. The company or garage will then use specialist equipment to remove it from the exhaust system. This process can take up to an hour, depending on how difficult it is to access the DPF.
  4. The DPF will then be disposed of in a safe manner, as per environmental regulations.
  5. Finally, the exhaust system will be checked over and a new exhaust pipe or other components may need to be fitted in order to ensure the correct flow of exhaust gasses.

Once this has been completed, your car should perform better and have improved fuel economy and lower emissions.

DPF Removal and Remap

As we said, your diesel particulate filter is an important part of your vehicle’s emission control system, trapping soot and other particles emitted by the engine. Over time, it can become blocked with these particles, restricting exhaust flow and causing the engine to run less efficiently.

Fortunately, there is a solution – DPF removal and remapping. This involves removing the DPF from the exhaust system and carrying out a software upgrade (or ‘remap’) to the engine management system.

The result is increased power and torque, improved fuel economy, and reduced emissions. And because the DPF isn’t there to restrict exhaust flow anymore, you’ll also notice an improvement in noise levels.

How to Remap a Vehicle with a DPF Removal?

Here’s a step-by-step guide on how to remap a vehicle with a DPF removal:

  1. Drive your vehicle for at least 20 minutes to heat up the engine and exhaust system. This will help loosen any built-up soot in the DPF.
  2. Park your vehicle in a well-ventilated area and make sure the engine is turned off.
  3. Remove it from the exhaust system using a wrench or socket set. Be careful not to damage the filter as you remove it.
  4. Clean it using compressed air, an air compressor, or a pressure washer. You can also use a chemical cleaner specifically designed for cleaning DPFs.
  5. Once the filter is clean, reinstall it into the exhaust system and tighten all clamps securely.
  6. Start the engine and let it idle for a few minutes to check for any leaks before taking it out for a drive.
  7. Visit a professional vehicle tuning service to have your engine remapped with the DPF removed. This may involve reprogramming the vehicle’s computer and/or changing the fuel injection parameters.
  8. Once the remap is complete, test drive your car for at least 15 minutes to make sure everything is working correctly.

Pros of Removing a DPF

  1. Improved performance: The removal of a DPF can result in improved engine performance due to the reduced back pressure that the filter creates. This increased air flow can result in a noticeable boost in power and torque, as well as an increase in fuel efficiency.
  2. Reduced maintenance costs: Removing it eliminates the need for frequent filter replacement or cleaning, which can save significant money over the life of the vehicle.
  3. More accessible diagnostics: By removing it, it is easier to access and diagnose any underlying issues with the vehicle’s engine or exhaust system, allowing for more accurate and timely repairs if necessary.
  4. Reduced exhaust emissions: Without a DPF filtering out exhaust particles, there is less risk of harm to both humans and animals from air pollutants such as soot and particulate matter.
  5. Increased longevity of the engine: The improved air flow can reduce the amount of stress on the engine, helping it to last longer and perform better for a longer period of time.


In conclusion, the process of DPF removal and remapping is beneficial for those who are experiencing issues with their diesel particulate filter. This method can help to restore your engine’s performance, ensuring that it runs smoothly without any further complications.

It also helps to reduce emissions, which will benefit both you and the environment in the long run. By following these steps carefully and seeking professional assistance where necessary, you can ensure a successful result when it comes to fixing blocked DPFs with DPF removal and remapping.