While most vehicles are equipped with a regen style filter, single use DPF filters still do exist. It's very important to keep your DPF as clean as possible because a clogged DPF can cause motor and turbo failures due to an increase in
A DPF system delete affects the exhaust process and is often done to increase diesel engine performance, improve fuel mileage, and enhance torque.
Modern DPFs are highly efficient in reducing PM emissions, which could achieve a high filtration efficiency of over 99% [23], [29]. However, back pressure builds up across DPF as PM accumulates, which may deteriorate engine combustion and consequently worsen fuel consumption and emissions performance.
When the volume of soot and ash inside a DPF increases, the back pressure rises, which produces a higher load on the engine to force the exhaust gases through the DPF. This uses more fuel and causes the vehicle to require more frequent regenerations, each of which consumes fuel.
If your DPF is blocked, your engine will have to work harder to expel exhaust gases, reducing available power and increasing fuel consumption. To bring your engine efficiency back to normal levels, you will need to clean your DPF filter, so consider DPF cleaning in the UK if you notice any of these symptoms.
Although it is not illegal to remove a DPF filter form your vehicle, it is an offence under the Road vehicles (Construction and Use) Regulations (Regulation 61a(3))1 to use a vehicle which has been modified in such a way that it no longer complies with the air pollutant emissions standards it was designed to meet.
A blocked DPF can force exhaust gas through the smallest of gaps, including the clearances in the bearing housing VNT lever arm and turbine housing waste gate mechanisms. If this occurs, carbon build up in these mechanisms can restrict movement of the levers affecting performance of the turbo.
Running the cycle too often while keeping the back pressure in the exhaust system low will result in high fuel consumption. Not running the regeneration cycle soon enough increases the risk of engine damage and/or uncontrolled regeneration (thermal runaway) and possible DPF failure.
A bad fuel injector or dirty/old fuel filter can drastically affect the flow of fuel into the engine. A fuel system problem is one of the most common causes of poor gas mileage. The more you run your A/C, the lower gas mileage you will get.
The engine may be fine but the crucial components that contribute to the combustion cycle could be faulty. For instance, a faulty spark plug or O2 sensor in a petrol engine and a dirty fuel injector in a diesel engine can cause more consumption of fuel resulting in low fuel mileage.
The EGR valve cycles open and closed based on throttle movement and intake manifold vacuum to reduce exhaust emissions. If it sticks open due to carbon deposits and heat distortion, it creates a vacuum leak and rough operation. This will adversely affect fuel economy.
In many cases, a proper DPF delete will result in gaining over 100 horsepower while improving your fuel mileage and the lifetime of your vehicle. Ask us about a Ford 6.4L DPF Delete Service, or service for your GMC, Dodge, or Chevy truck.
A DPF can last up to around 100,000 miles if maintained properly. After the car has exceeded that mileage, you could be looking at paying a large amount of money for a replacement - so always properly check MoT and service records when buying a used car.
Once the physical filter removal has been completed the ECU (Electronic Control Unit) is reprogrammed (Remapped) and any DPF related structures removed from the vehicles software. This will prevent the vehicle from sensing the missing filter and will prevent future DPF regeneration and DPF related warning lights.
Without it, the air flows back into the engine better and faster, resulting in increased pressure and power generation. So for those wanting faster speeds, DPF removal may be for you. This is also key in trucks and tractors that require larger and more powerful engines.
Most failures are caused by the three 'turbo killers' of oil starvation, oil contamination and foreign object damage. More than 90% of turbocharger failures are caused oil related either by oil starvation or oil contamination. Blocked or leaking pipes or lack of priming on fitting usually causes oil starvation.
While your vehicle won't stop running the moment the light turns on, continuous driving can lead to more severe issues like decreased fuel efficiency, reduced performance, and in the worst case, engine damage. An illuminated DPF light will cause an MOT failure.
When an EGR valve becomes clogged or stuck close, it can increase the amount of diesel soot passed on to the DPF, contributing towards faster blockage. A clogged EGR valve alone can cause a rough idle and heavy knocking, both of which are tell-tale signs of pre-detonation.
DPF, especially when clogged, affects airflow and causes delays in the exhaust process. Additionally, it affects the overall engine performance and power. When you remove the DPF, fuel flows better into the engine, boosting power generation and pressure. DPF delete is a sure way to increase engine horsepower.
Is premium diesel better for a car's DPF? There is no evidence to suggest that premium diesel makes much difference to the DPF, however running your car with a low tank can cause issues. If your fuel warning light is on, some cars won't start the active regeneration process as it increases fuel consumption.
All you have to do is get your car on an A road or motorway on a regular basis, such as every 300 miles. You then need to run it for 10-20 minutes at speeds in excess of 40mph. This will heat up your exhaust and burn off any soot in the filter.
You should consult the handbook for your vehicle for more specific guidance on how you should drive to initiate regeneration of the DPF and clear the warning light. Nevertheless, a general rule of thumb to follow is that you should run the engine at least 40 mph and at least 2500 rpm.
Driving at a speed greater than 40mph for more than 10 minutes should ensure your DPF goes into 'regeneration' mode and clears the blockage.