What Is The Benefit of An EGR Delete On Duramax? Flashark

An EGR deletion is among the most popular car performance enhancements.

EGR is essentially a kit that boosts a car's performance. The majority of buyers use it to increase the performance of their diesel engines.

The following information can be useful if you're new to or not familiar with EGR delete.


EGR deletion is essentially an aftermarket component that disables the vehicle's EGR system. This is one of those parts that many drivers turn to to enhance their cars' performance, even though users do not prefer certain aftermarket kits. Simply put, it lowers a vehicle's exhaust emissions. It alludes to a method for reducing nitrous oxide emissions inside the exhaust system. This is accomplished by returning a portion of the engine exhaust via the cylinders. In the end, your car may operate as though an EGR valve were not present.What Is The Benefit Of Anegr Delete On Duramax?

You'll see a few significant differences after installing the EGR delete kit. For a variety of diesel engines, including those made by Duramax, Cummins, and Power Stroke, you may find an EGR kit.

It's critical to remember that while an EGR elimination enhances fuel economy and has other benefits, it also has drawbacks. For example, in a much shorter period of time, the engine's exhaust gas temperature can rise, and the oil can get dirtier with more pollutants.What Is The Benefit Of Anegr Delete On Duramax?


Contrary to what the majority of performance-oriented Duramax owners think, the EGR plays a crucial role in increasing engine life and fuel efficiency while having no effect on horsepower. At least, that is what expert Duramax diesel technician Rod Halsten claims.

(Additionally, blocking and/or removing the EGR is a federal offense that most corporations can't afford to do)

The Duramax EGR only runs at idle and cruise, according to Halsten, an ASE-certified mechanic having more than 20 years of experience working on GM diesel, where it allows "inert gases" into the cylinders so the engine can run leaner for the best mpg while keeping the combustion chamber cooler and lowering NOx.

"In order to maximize power, the EGR is automatically shut off during WOT and under increased throttle load. "

The EGR manifold will accumulate oily soot during extended periods of inactivity, says Halsten.

Extreme soot accumulation might make the EGR valve stick and impair idle performance. However, the EGR system has little impact on engine output because the ECM bypasses it entirely at WOT or 8 to 10 pounds of boost.

Halsten advises replacing the EGR valve once it displays the P0401 (EGR Flow Insufficient) code, which ordinarily doesn't occur until 100,000 miles have been driven.

Note: Verify that the dealer flashed the most recent EGR program onto your LMM Duramax in accordance with the service bulletins.

Cleaning the EGR cooler is possibly in order if the EGR valve needs to be changed.

Both EGR and MAF sensor codes will be set off by a clogged EGR cooler, impacting performance.

Therefore, when the valve is replaced, you should take the EGR cooler out and thoroughly clean it, says Halsten. "To do it well, the process takes a few hours."

When the EGR is changed, and the cooler is cleaned, Halsten advises checking the DPF filter downstream for flow restriction.

The majority of GM service technicians can check the flow into and out of the DPF using their diagnostic tools without touching it.

If the flow is less than what is considered acceptable, remove the DPF and have it cleaned by a specialized company which is 3–4 times less expensive than having it replaced with a new one.


Improved Fuel Economy and Engine Longevity 

You can improve your diesel engine's power levels and overall fuel efficiency by using an EGR deletion. Your car's engine starts to run cleaner since an EGR deletion kit moves the exhaust gas away from it. It increases process efficiency and lessens the likelihood of diesel particulate filter (DPF) failure. Overall, you may expect to notice a 20% gain in fuel efficiency with this aftermarket package. Additionally, the EGR delete kit might lengthen the life of your engine.

Reduced Engine Temperature 

EGR valves have a lot of soot in them by nature. The exhaust gases start to circulate more within the EGR system, causing a blockage when the coolers or valves become clogged with soot. You notice a decrease in engine power as a result of the increased temperatures around the engine. Lower exhaust gas is produced when you circumvent this, though. Your car's engine coolant temperature consequently drops while it's operating.

Helps Save Money

An EGR delete can also prevent you from paying for pricey repairs. If the EGR is broken, it may be quite expensive to repair or replace. An EGR delete eliminates the potential for such harm, saving you money.


While there are frequently numerous advantages to getting around a broken system, they could not be appropriate for all vehicles. Negative consequences on some diesel vehicles include decreased horsepower, elevated exhaust gas temperature, and engine banging. Sometimes replacing an EGR valve rather than bypassing it can be more advantageous.

A kit isn't usually required if an EGR valve is clogged because it effectively functions as an EGR delete. To determine the best course of action, having a reliable mechanic analyze your engine is best.



Egr delete kit

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