What EGR/DPF Off: Find Out What It Is!

The environment has become one of automakers’ major concerns in recent years. Diesel-powered machines, for example, represent the highest levels of pollution compared to other fuels because the substances emitted during burning are more harmful to human health, as they contain heavy metals. This concept brings about the need to reduce gas emissions, and EGR/DPF appears.

Want to know more about the subject? Read the article until the end! We’ll also reveal a noninvasive solution to remove the diesel particulate filter using an emulator without interfering with a machine’s electrical system.

What are EGR and DPF?

The “EGR” valve or “Exhaust gas recirculation” – is a valve developed to reduce the emission of N₂O (nitrous oxide) in diesel and gasoline engines, reusing a portion of the gas exhaust pipe into the engine intake.

The “DPF” or “Diesel Particulate Filter” is a filter developed to remove diesel particles from machine exhaust gases. When the filter reaches approximately 45% saturation, the various DPF sensors decide to activate “active regeneration,” where an additive is injected into the filter, and the accumulated soot is burned.

There is also “passive regeneration” of the filter, which generally occurs on longer stretches of highway, where the exhaust gases are hotter, and the soot accumulated in the filter burns by themselves.

Importance of EGR and DPF in Diesel Machines

The DPF filter (Diesel Particle Filter) contributes to reducing the pollution expelled by diesel machines’ exhaust. It is a device attached to the exhaust system designed to eliminate soot particles from diesel engine exhaust gases.

Over time, these particles concentrate inside the filters and prevent the correct release of gases and the consequent proper functioning of the machine. It is then necessary to regenerate the filters to eliminate accumulated particles.

The EGR (Exhaust Gas Recirculation) valve acts to control the emission of polluting gases that come from the burning of fuel – mainly diesel. This valve will also determine the amount of gases that would be expelled and reused. Together, these tools benefit the environment and need periodic maintenance to ensure correct operation.

Advantages and Disadvantages of Removing the EGR

Some users decide to remove it using an emulator as substitute to obtain more power when the construction equipment drives at low and medium speeds. Some of the advantages are:

●  Lower consumption in the long term;

●  Improves performance at low speeds;

●  Prevents impurities from being deposited in cylinder conduits and valves.

However, canceling the EGR valve does not only have advantages. Among the disadvantages are:

●  Greater emission of polluting gases in the range of greatest use of the diesel engine.

●  It is likely that the machine will not pass the machine inspection due to excessive pollution.

●  There is more noise and roughness of operation at low and medium speeds because the engine and its injection are prepared to work with part of the burned gases. Therefore, if you remove this valve, you will only receive fresh air at low revs.

●  The engine takes much longer to reach the ideal temperature, increasing consumption when cold.

Diesel Particle Filter (DPF) Removal: Is It Really Worth It?

Particle Filters have been the subject of many conversations in recent years. Many problems are caused by this element, which is designed to retain particles produced by internal combustion engines.

Is it worth removing your machine’s DPF? Perhaps we should start with the question: Why must I perform DPF delete?

The Particle Filter has a self-cleaning function. This self-cleaning (DPF regenerations) involves incineration of accumulated particles through post-injections inside the cylinders, which aim to increase the temperature of the exhaust gases, sometimes up to 700ºC!

However, like cell phone batteries, DPF loses performance over time, and it becomes increasingly difficult to successfully perform the self-cleaning function.

Lower-quality fuels, inefficiencies caused by the injectors—which were weakened with too many post-injections—and the release of engine oil, coming from maybe a turbocharger with end-of-life seals, among other factors, cause the DPF to become clogged by contamination. It doesn’t take long until it is irreparably damaged when this happens.

For DPF regeneration to be effective, it must still be intact and with all electronic control components in perfect health. If your engine light is on, don’t delay checking your DPF’s health; tomorrow may already be too late.

In addition to forced regeneration, there are four types of DPF cleaning. The first technique involves introducing a cleaning liquid into the particle filter, followed by forcing a regeneration. It has the advantage of cost, as it does not use expensive equipment or require disassembly. It helps in cases of simple clogging, but it won’t perform great miracles.

When performing DPF delete, we can opt for a DPF emulator equipped with a wiring harness that matches the original plugs. In our experience, it is the only technique that allows us to offer a guarantee of results, as the particles eliminate the worry of several elements of the exhaust system.


Whenever you notice a DPF problem, the best approach is to take action immediately to avoid further damage. You can now check the market for the type of DPF delete you should consider buying. Hence, if you’re looking for an emulator Volvo DPF delete, a Caterpillar DPF delete, or any of many other types, you can check it out here!

Christopher Stern

Christopher Stern is a Washington-based reporter. Chris spent many years covering tech policy as a business reporter for renowned publications. He has extensive experience covering Congress, the Federal Communications Commission, and the Federal Trade Commissions. He is a graduate of Middlebury College. Email:[email protected]

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