Benefits of an EGR Cooler Delete: Pros & Cons

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Your ride’s Exhaust Gas Recirculation (EGR) valve is a critical component of the exhaust management system of your vehicle. It contributes to your vehicle’s present fuel economy and ability to complete an emissions test and stay on the road. Sounds great, right? Therefore, why would you prefer to have an EGR delete?

The EGR delete is a trendy pick for automobile performance modifications. While most drivers are familiar that adding this aftermarket EGR delete kit improves vehicle performance, not everyone understands how an EGR delete performs and why it’s advantageous. Continue reading to discover how an EGR delete could improve engine power and performance.

What Is An EGR?

egr valve

The exhaust gas recirculation (EGR) valve is a component that initiates the reduction of nitrous oxide (NOx) emissions inside the car’s exhaust. It’s the process of recirculating some of its exhaust gases back to the engine cylinders. There are many significant disadvantages to this, the most serious of which being blocked intake systems.

Excessive soot degrades engine efficiency and may eventually need expensive fixes. Additionally, even though EGR valves are meant to help decrease pollution levels, they also impair engine performance at the same time. For the engine to produce the same degree of power, it needs to burn greater fuel, resulting in increased air pollution.

What Is An EGR Delete?

EGR delete is a word that refers to an aftermarket item that disables the car’s EGR system. Although customers hate other aftermarket kits, this one is the preferred kit that numerous drivers choose to boost their vehicle’s performance and engine longevity.

Simply put, it decreases a car’s exhaust emissions. It is a term that refers to a process utilized inside your exhaust system to reduce nitrous oxide emissions. This is accomplished by returning some of the engine exhaust to the engine cylinders through recirculation. Finally, your car may operate as if it never had an EGR valve fitted.

You’ll notice numerous significant improvements upon fitting the EGR delete kit. Additionally, although an EGR delete improves fuel economy and provides other advantages, it does have certain negatives. For example, your engine’s exhaust temperature could rise, and your oil could get dirtier with additional impurities in a much shorter period.

EGR Delete Pros and Cons


Numerous drivers opt for EGR delete kits to boost their vehicle performance. However, putting one in your car has several advantages and disadvantages—a deleted EGR system has reported triggering coolant leaks, leaking cylinders, and jammed valves, particularly on diesel engines.


Listed below are the number of significant advantages to performing or installing an EGR delete kit on most diesel engines.

Purifies Exhaust System –This initial advantage is most noticeable in diesel engines, wherein prolonged usage of an EGR valve results in a deposit of soot that obstructs airflow. This is prevented by conducting an EGR delete, enabling engine exhaust to flow cleaner and preventing soot from reaching the combustion chamber.

Possible Fuel Efficiency Increase – By cleaning your exhaust in such a manner, it becomes highly efficient. Without such “drag” caused by soot and various pollutant residues that occur naturally due to exhaust gas recirculation, your engine might operate much more smoothly, increasing fuel economy. It has been reported to rise by up to 20%.

Engine Temperature is Reduced – Another benefit of a smoother-running engine is a reduced total engine temperature. Whenever blockages begin to emerge, your engine will work harder to balance and surpass them; bypassing its EGR valve allows your engine to continue operating at a constant pace, thus keeping a constant temperature.

Throttle Response and Increased Horsepower – Another engine system component that becomes blocked by EGR is your intake and turbo. By preventing these buildups, optimum horsepower may be kept. Additionally, you’ll notice that it considerably improves throttle response due to increased airflow.


Although there are numerous advantages to bypassing a faulty system, it might not be appropriate for every car. Specific diesel engines might exhibit detrimental impacts. The safest action is to get your engine inspected by a reputable technician first to determine the best plan.

Illegal –The primary disadvantage is that it makes the automobile unlawful on public roads. Apart from that, the primary disadvantage is that your vehicle reverts to being a NOx-spewing engine. This also means failing an emission test. Additionally, you must be aware that if you do not adhere to the requirements and any emissions component alteration, the fines might be thousands of dollars.

Increased Exhaust Gas Temperature (EGT) –Your engine’s exhaust gas temperature (EGT) could rise if gases are no longer cooled by the EGR Cooler and sent straight back into circulation.

Dirtier Oil –Oil could also become dirtier more quickly due to impurities deposited by gases that remain in your engine. This means your engine might require a change oil within a shorter period.

Reduced Horsepower –Usually, the EGR delete kit functions best on older diesel engines. Specific designs may struggle to utilize this option since it limits the quantity of air supplied to the combustion cycle, which has a negative effect on the horsepower generated during regular operation.

Engine Knock –The EGR delete kit is known for triggering your dashboard’s check engine light. Once the modification is done, it’s not uncommon for your engine to start knocking. This occurs as a result of altering the temperature balance of your car.

EGR Delete Cost

The kit would run around $40 to $50 if purchased directly from the supplier. If you DIY the installation, you’ll only be charged for the price of the equipment and part of your labor and time. Professional installation of the EGR Delete is expected to run $200 or more. If your ECU requires tuning after installation, this may raise the cost of the procedure.


If you own a car that doesn’t need to be street legal and you want to improve its off-road performance for personal satisfaction, an EGR Delete is a terrific endeavor. It’s a reasonably simple alteration and not a costly one in the grand scheme of car mod. Also, it’s generally reversible, which does not leave your vehicle completely unusable on public roads.

However, suppose you have only one vehicle and use it for daily drive and execute an EGR Delete without understanding the legal implications. In that case, you risk your streetcar from being a roadworthy, legal vehicle. Understand the consequences before implementing this mod. Best of luck!


Can EGR delete cause damage to the engine?

Several people are unaware that, yes, removing an EGR system may assist avoid certain costly repairs. However, they may potentially create significant difficulties in other components of your engine.

Does EGR delete add horsepower?

Indeed, it can. You’re aiming at a rise of roughly 1%, which is hardly noticeable. By removing EGR, you boost the air density of the air/fuel mixture and keep the input manifold clean.

Will EGR delete throw a code?

Do you see a CEL on your dashboard? If yes, it’s more of a headache than anything else. Deleting an EGR would result in an “insufficient flow code.”

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