6.7 Powerstroke EGR Delete Problems – Everything You Need To Know!

With the 6.7 Powerstroke EGR delete, you may experience issues like-

  • A blocked diesel particulate filter (DPF), failed emission tests.
  • Indicator lights popping up accompanied by EGR-affiliated codes.
  • Engine knocking to increased combustion temperatures and reduced engine power.

However, 6.7 Powerstroke EGR delete problems are common, especially when you fail to remap or reprogram the ECU. But does EGR delete on 6.7 Powerstroke damage the engine?

Read along to discover more about the different 6.7-liter Powerstroke EGR delete problems.

6.7-liter Powerstroke EGR Delete Problems and Their Solutions: In a Table

Below are the common problems you may experience with your 6.7 Powerstroke EGR delete and the solutions.

No.Possible ProblemsSolutions
1Engine power loss● Delete the DPF
● Use a tuner with the correct tunes
2Indicator lights popping up● Clear the EGR-related codes
● Disable the DPF and SCR systems
3Engine knocking● Delete the DPF
4Increased combustion temperatures● Reprogram the ECU with a tuner
5Failed emission tests● Tune out the EGR-related codes
6Blocked DPF● Remove the DPF
● Allow DPF regens

What is 6.7 Powerstroke EGR Delete?

EGR stands for exhaust gas recirculation. It is a system built to help minimize harmful emissions from 6.7 Powerstroke diesel engines. It helps reduce nitrogen oxide (NOx) emissions while lowering combustion temperatures.

You just need an aftermarket performance kit to remove the EGR system, including the valve and cooler. This will force your 6.7-liter Powerstroke engine to work without recirculating the exhaust gasses.

Read: What Does Mean P20B9 Code On 6.7 Powerstroke?

What Are 6.7 Powerstroke EGR Delete Problems?

Now that you know what 6.7 Powerstroke EGR delete is. Let’s discover the problems you may experience after disabling the system.

#1 – Reduced Engine Power

Once you delete your 6.7 Powerstroke’s EGR, you may experience power issues. Generally, your vehicle may accelerate seemingly normally for a second. But once you hit the third gear, the boost may reduce from up to 10 psi.

Simply put, your truck may feel like your engine is in a power-restricted mode. You may also get EGR-related codes such as P0401, P0403, P2185, and P2425.

This issue is common in the 2011 F-350 with a 6.7L Powerstroke engine and occurs when you only delete the EGR and not the DPF.


Start by doing DPF delete. Additionally, using a tuner with the right tunes can solve this power issue problem.

#2 – Warning Lights Popping Up

With the 2012 F-250 XL 6.7L Powerstroke, indicator lights may pop up on your dashboard after performing the EGR delete. These include the check engine light (CEL) and wrench light. Diagnostic trouble codes usually accompany these lights.

But what does the wrench light mean on a Ford? Typically, the wrench light warns you about a malfunctioning powertrain. It usually illuminates due to low boost or voltage. Consequently, your 6.7 Powerstroke may enter into limp mode.


  • Step 1: Reinstall the EGR system back.
  • Step 2: Then, limp in your engine to clear the codes.
  • Step 3: Next, get the correct tuner for disabling the EGR and deleting the DPF and SCR systems.

#3 – Engine Knocking

After deleting the EGR, you may also encounter a knocking sound coming from the engine when you stop. This knocking noise may sound like a bunch of loose marbles rolling around.

Generally, this sound is a timing rattle as the diesel particulate filter (DPF) regeneration occurs. This is because when you delete the 6.7 Powerstroke EGR, the ECU usually uses a different fuel map.


The best solution would be to delete the DPF to stop the regeneration or regen of the DPF filter.

#4 – High Combustion Temperatures

The EGR system is built to lower the combustion temperatures of the 6.7 Powerstroke engine, reducing the amount of nitrogen oxide.

This is because the higher the temperatures, the more toxic nitrogen oxides are produced. Therefore, deleting your 6.7 Powerstroke EGR may cause the combustion temperatures to rise.


You will need to reprogram or remap your truck’s engine control unit (ECU) using the best tuner.

#5 – Failed Emission Tests

The EGR is an efficient means of regulating the emission of nitrogen oxides (NOx). This system reduces NOx in your 6.7 Powerstroke engine by lowering the combustion chamber’s oxygen levels and combustion temperatures.

Therefore, you could fail emission tests in all states, in the USA, since it’s illegal here.


Get a professional tuner to tune out any EGR-related codes on your truck, including the check engine light.

#6 – Blocked DPF

Deleting only the EGR and leaving the DPF filter in place may cause the DPF to block. This is because the EGR valve operation is a prerequisite for diesel particulate filter (DPF) regeneration.

Generally, the DPF filter is built to vent exhaust fumes out of your engine. So, if the DPF is blocked, your 6.7 Powerstroke engine may have to work harder to vent these exhaust gasses. And as a result, you may notice weakened acceleration.


If you must delete the EGR system, you must also remove the DPF. Alternatively, you could get a tuner that enables the EGR to open only during start-up so the DPF regens occur as needed.

This may also help prevent various 6.7 Powerstroke DPF delete problems like failed emission tests.

Are There Any Advantages Of 6.7 Powerstroke EGR Delete?

Because of the many EGR delete problems, you may be wondering if the EGR delete is worth it. Well, there are several benefits, including-

● Increased Engine Performance

The 6.7 Powerstroke EGR is designed to recirculate exhaust gasses into the engine’s intake system.

However, it also recirculates the soot created from the exhaust gasses, which tends to clog the EGR valve, reducing the engine’s performance. So, deleting the EGR may help reduce clogging and improve your engine’s performance.

● Reduced Repair Costs

A clogged EGR must be repaired as soon as possible to prevent premature engine wear. So, installing EGR delete kits can prevent clogging and reduce recurring repair costs.

● Improved Engine Life

Excess soot from exhaust fumes may affect your engine’s lubrication. Consequently, this may cause increased wear and reduced engine life.

Deleting the EGR may increase your 6.7 Powerstroke life by preventing exhaust gasses from being averted back to the engine.

● Easy to Install and Affordable

The best EGR delete kit for your 6.7 Powerstroke is inexpensive and easy to install. This is compared to the repair costs of the EGR system. In fact, some of the best kits cost around $200.

Does EGR Delete Damage 6.7 Powerstroke Engine Itself?

No, but only when done correctly by a qualified person and using the best EGR delete kit. In this case, it may extend your vehicle’s engine life. But how is EGR deletion conducted correctly?

Once the EGR is removed, the ECU must be tuned so your 6.7 Powerstroke can run properly without the system. If not, this may lead to a rise in combustion temperatures, damaging the engine over time.

In addition, the DPF or SCR systems must be deleted to prevent issues like power loss, engine knocking, and a blocked DPF.


Check out these frequently asked queries regarding 6.7 Powerstroke EGR delete issues and their answers.

Does an EGR delete cause black smoke problems in 6.7 Powerstroke?

No, because black smoke occurs due to poor air/fuel mixture, causing incomplete combustion. However, EGR delete does not cause partial combustion.

Can 6.7 Powerstroke EGR delete increase horsepower?

Yes, as long as you remove the DPF and tune the engine with the right tunes. Generally, using the best EGR delete kit will ensure better horsepower and torque than the stock EGR system.

Is 6.7 Powerstroke EGR deletion illegal?

Yes, they are illegal in all 50 states of the U.S, especially for on-road users. However, if you can control your vehicle’s smoke capacity, ensuring it does not exceed 20%, you are good to go. Proper tuning is also critical in ensuring you don’t get yourself in trouble for removing the EGR.

Read This Informative Article: How To Maximize Your Mileage on 6.7 Powerstroke

Key Takeaways:

Most 6.7 Powerstroke EGR delete problems occur when you fail to perform the procedure correctly. But even with the many EGR delete issues, there are also advantages to removing the EGR. Now, here are some important takeaways for you:

  • Indicator lights popping up is one of the common problems you may encounter after deleting your 6.7 Powerstroke EGR.
  • Apart from the problems, there are also benefits of deleting the EGR, including reduced repair costs and better engine performance.
  • Most 6.7-liter Powerstroke EGR delete problems occur when you don’t delete the DPF and fail to remap the ECU.

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