DPF DELETE AS AN OPTION IN REMAPPING

The exhaust emissions standards for new cars have effectively required fitment of a DPF in the exhaust of diesel cars since 2009 in certain countries when the 'Euro 5' standard came into force and ‘Euro 6’ it became compulsory.

Standards aim to deliver an 80% reduction in diesel particulate (soot) emissions but as owners are finding out with large costs, the technology is not without its problems for short journey cars, which there was an exemption initially for new car buyers but no longer. Also, regeneration causes excess soot when performed, new diesel cars are looking to be phased out of production in 2024 in many countries or by manufacturers with focus aimed at Hybrid or totally electric cars.

HOW DO THEY WORK?

The DPF looks like a catalyst convertor but is mounted close to the engine. Inside it is a complex honeycomb ceramic structure designed to clean exhaust gases while minimising flow reduction (which would otherwise limit performance but inherently will). By forcing the exhaust gases through the walls between the channels of the DPF, the particulate matter is deposited on the honeycomb structure, so reducing the amount of air pollution. Once the DPF reaches a certain level of ‘Saturation’ it performs a regeneration cycle to burn off the particulate matter inside the filter.

DIESEL PARTICULATE FILTER ADDITIVES

Some manufacturers use additives to reduce the ignition point of the soot particles by secreting small amounts of fluid into the fuel tank which mixes with the fuel. The additive is a service item and is designed to require refilling every 75,000 miles approximately. Ignoring the warning for low additive will mean the DPF will not regenerate properly and will almost certainly require a new DPF. Certain models of vehicles however require the DPF to be changed with the additive top up which makes for expensive servicing bills.

DO THEY REQUIRE MAINTENANCE?

A DPF has a design life of around 75,000 to 100,000 miles but this can be subject to large variation depending on vehicle use and engine condition down to as low as 20,000 miles for certain conditions. Every time the ECU forces a regeneration cycle it burns the particulate matter down to a much smaller amount of finer soot, they don’t get completely removed from the filter. Over time, the fine soot content that is burnt off builds up a layer of ash to a point where a regeneration cycle is no longer able to be performed; at this point the filter either needs emptying, replacing or forcibly cleaned off the vehicle in our DPF refurbishment machine.

Removing the DPF is often advised to check the opacity of the exhaust emissions which can give some indication of any potential running issues which can impact on the operation of the DPF. Issues such as leaking injectors and engines burning oil can massively reduce the life of a DPF.

COMMON CAUSES FOR DPF FAILURE

There are several reasons a DPF can fail, the most common are shown below:

• High mileage and compacted with fine soot

• Failed sensors preventing DPF regeneration

• Lack of additive in fuel (where fitted) causing incomplete burn off

• Engine issues i.e. leaking injector, valve stem oil seals, worn piston rings, turbo thrust bearing failure causing excess oil leaked into the exhaust tract

• DPF unable to regenerate due to driving conditions e.g. urban driving only

• Badly written performance tuning

• Driving in too low a gear on a motorway not allowing the regeneration to start.

DIESEL PARTICULATE FILTER (DPF) REMOVAL DPF DELETE

• Are you having problems with your DPF?

• Are you facing a large bill for your DPF replacement?

• Is your DPF causing you poor fuel economy?

• DPF Removal can solve your problems.

We are genuine software developers and as such have unrivalled knowledge and experience in DPF Removal from modern ECU’s. Our DPF delete software will ensure that you have trouble free motoring after the DPF removal and give you piece of mind that your vehicle will not go into limp mode due to DPF regeneration ever again.

Modern turbo diesel management systems all accommodate the use of a ‘diesel particulate filter’ or “FAP - Filtre à particules” as it has become mandatory as part of Euro Emission controls. The problem many are finding is that any driving other than motorway use will cause the DPF to clog up and force it to regenerate. There is only so many times a DPF can regenerate before the compacted soot reaches a critical saturation level at which point DPF replacement is imminent.

 Our DPF remap in basic switches off the functionality of the DPF ensuring it never attempts to regenerate again. What is required is that the DPF filter is removed from the centre of the exhaust core or drilled to a specific diameter internally ensuring all sensors are still in place and functioning. When finished, the DPF still looks to be in situ with all sensors operational just not the DPF trap and no regeneration problems.

PLEASE NOTE:

Using a vehicle on the public road without a dpf fitted when one was fitted to the vehicle originally by the manufacturer is an offence under the road traffic act and as such the driver of such a vehicle is liable for a fine of up to £1000 for a passenger vehicle and £2500 for light goods vehicles. We only offer removal services for vehicles that will be exported or not used on UK roads.

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COMMON CAUSES FOR DPF FAILURE

Our DPF Removal software will ensure that your vehicle operates without the DPF being present. Most customers also benefit by having a performance remap alongside the DPF remap which provides even better gains than just the DPF Removal itself. The benefits of DPF removal are as follows:

• No expensive DPF replacement costs

• No more limp modes when the vehicle decides to do a forced regeneration

• Improved MPG due to the removal of an air restriction allowing the engine to breath better

• Improved power output of the vehicle. We have tested many vehicles before and after DPF removal and every single one has provided a performance gain.

After DPF removal it is possible to use biofuels as they can no longer cause issue to the DPF filter.

IS DPF REMOVAL LEGAL?

Please note that we only offer DPF solutions for Off-Road Usage only or for export to countries where it is not mandatory. Driving a vehicle with no DPF on the road is illegal and will render your vehicle unable to pass an MOT in the UK. We recommend cleaning in all other cases.

DPF REMOVAL - DPF DELETE FOR MOST MAKES & MODELS

We can delete the DPF function from all makes and models of vehicles.

REGARDING DPF REMOVAL

• DPF’s have multiple sensors which aid its operation. These include temperatures sensors and differential pressure sensors. All of these sensors may need be working in order to have the DPF removed

• If a car is in limp mode and the DPF is compacted requiring replacement, simple removal may not always cure the problem. The DPF failing is often a symptom of another fault, not the cause of the issue. For instance, a car may require a DPF replacement due to compaction, but the cause may be leaking injectors which have caused the DPF to fail. Similarly the management light may be on and in limp mode, the DPF may be saturated requiring replacement yet after removal the car may still be in limp mode and management light in with the common cause being a faulty differential pressure sensor and the reason the DPF failed. DPF removal is a great facility and can save you thousands but sometimes there are additional parts that require replacement which only become highlighted after the DPF has been removed.