A diesel particulate filter check has been part of the MOT test since February 2014. If a filter has been removed, the car will fail its MOT. Removing the DPF will sometimes cause the warning light to glow – and this itself is an MOT failure point: no dashboard warning lights should remain on during the test.
Blocked DPFs wreak havoc with the delicate balance of your engine by preventing the normal venting of gases, which causes a variety of engine issues, as described above. In addition to reduced power and fuel efficiency, a blocked filter may eventually cause a dangerous mechanical malfunction and break your engine.
Your DPF filter is designed to conduct exhaust fumes out of the car's engine, so when it is blocked, these fumes cannot leave the engine as quickly. This stops the engine from working to its full capacity and will invariably reduce your fuel efficiency.
"Maximum court-imposed penalty for an individual is $22,000!" Is a DPF delete legal? Okay, so the $22,000 question: is it legal, and can you get fined for deleting the DPF? The short answer is, yes you can get fined, and no, it's not legal.
Most DPFs will automatically clear as they're used but on rare occasions, in specific circumstances, they may get blocked and require manual cleaning. In normal use, a DPF cleans or regenerates itself by reaching a sufficient temperature to burn off the excess soot.
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.
One final consideration, it takes time for a DPF to block, sometimes years. Once blocked though, turbo failure can occur very quickly.
Is it illegal to remove a diesel particulate filter? Yes, it is illegal. Owners face fines if caught and removing a DPF can also invalidate your car insurance policy.
No, it's illegal to remove or delete your EGR. Your vehicle has been designed by the manufacturer to operate with an EGR system. It is illegal and will also void the manufacturer's warranty on your vehicle and Australian consumer law protections.
Australia's adoption of Euro 5 emissions standards in November 2016 necessitated a significant reduction in particulate matter emissions for diesel engines, and the most practical way for car-makers to comply with this standard was through the inclusion of a DPF device.
A blocked DPF or obstructed exhaust will force your engine to work harder to expel exhaust gases, reducing available power and increasing fuel consumption.
Engine Low on power. Engine cannot rev to high RPMS. Black smoke from exhaust upon acceleration. Odour of diesel fuel into the cabin.
Replacing a DPF can easily cost $4000 to $8000, and sometimes more, it's a big cost… particularly when a vehicle is out of warranty!
The most common reasons for DPF blockages are: Short journeys where the engine doesn't reach optimum operating temperature; Clogged EGR Valve increasing diesel soot passed to the DPF; Faulty fuel injectors sending too much fuel to the air/fuel mixture; Incorrect engine oil upon servicing the car ; Turbocharger failure ...
Technically yes, but we would not recommend it. If you ignore the DPF light and continue driving, the build-up of soot will soon reach a point whereby your car has to enter 'limp-home' mode in order to prevent any damage to the engine.
Aside from increasing your risk of being charged with motoring law violations, removing your DPF and EGR can improve your car's power, performance, and fuel efficiency.
It is illegal to remove or a PDF.
Australian Design Regulations are contravened when you change the vehicle from the tested and approved designn NSW, individual fines are up to $11,000 and company vehicle fines up to $22,000 and the EPA are implementing similiar legislation across Australia.
Since 1999 most cars in built in Australia will have an EGR system of some kind. If your vehicle is fitted with an EGR system there is something you should know.
An EGR delete consists of using a delete kit to remove the system. The benefits include an improvement in engine performance, fuel economy and not having to worry about emergency maintenance on the EGR (or even the engine itself).
Removing a DPF is easy !
The first is with software use. It consists of reprogramming the computer so that it no longer takes the diesel particulate filter into account. The second part consists of acting directly on the exhaust pipe. The DPF is then separated, vacated, and then again welded on the line.
You may also void the customer's insurance policy in the event of an accident, as the police report would find that the vehicle has been tampered with and is deemed un-roadworthy. Vehicles with time or kilometer-based regenerations that have not been tuned will try to regenerate even though there is no DPF present.
If you are suffering regular problems with your diesel particulate filter, then a removing or deleting your DPF may be something you have considered, but you should not. And here's why: The main reason not to carry out a DPF delete is that when your vehicle is due for an MOT test, it will fail (if tested correctly).
If the DPF doesn't regenerate when it needs to, it can become blocked and subsequently cause your engine management light to turn on.
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.
There is a risk that Diesel Particulate Filter (DPF) systems may trigger fires and explosions by compromising hydraulic lines and igniting combustible fluids.