EGR Delete vs. EGR Cleaning: Pros and Cons Explained

Car engine with blue, silver, and black components

There are two methods that are commonly used in engine performance and emissions control:EGR system cleaning and EGR delete.

To ensure optimal engine health and compliance with emissions regulations, vehicle owners need to understand the nuances, advantages, and drawbacks of both approaches.

This guide digs deeper into the pros and cons and illuminates the path to help vehicle owners make informed decision-making.

Let’s get started!

EGR System Cleaning

EGR system cleaning is a maintenance procedure aimed at removing carbon deposits, dirt, and other contaminants from the components of the Exhaust Gas Recirculation (EGR) system in a vehicle’s engine.

The EGR system is responsible for recirculating a portion of exhaust gases back into the engine’s combustion chamber to reduce nitrogen oxide emissions. Over time, carbon buildup and debris can accumulate in the EGR valve, passages, cooler, and other components, affecting their functionality and causing issues like rough idling, decreased engine performance, and increased emissions.

EGR system cleaning involves disassembling, inspecting, and cleaning these components to restore optimal performance and efficiency.

EGR Delete

EGR delete refers to the removal or bypassing of the Exhaust Gas Recirculation (EGR) system in a vehicle’s engine. The EGR system is designed to recirculate a portion of exhaust gases back into the combustion chamber to reduce nitrogen oxide emissions.

However, some vehicle owners opt to delete the EGR system entirely for various reasons, such as improving engine performance or addressing reliability issues.

Pros and Cons of EGR System Cleaning & Delete

Here are the pros and cons of EGR system cleaning and EGR delete:

EGR System Cleaning


  • Maintains Emissions Compliance:EGR system cleaning helps ensure that the vehicle remains compliant with emissions regulations by restoring the functionality of the existing system.
  • Cost-Effective:EGR system cleaning is generally less expensive than EGR delete, making it a more budget-friendly option for vehicle owners.
  • Preserves Warranty:Since EGR system cleaning does not involve modifications to the vehicle’s components, it typically does not void the manufacturer’s warranty.


  • Temporary Solution:While EGR system cleaning can temporarily improve performance and emissions, it may not address underlying issues that could lead to future problems.
  • Labor Intensive:EGR system cleaning may require disassembly of components and manual cleaning, which can be time-consuming and labor-intensive.
  • Limited Performance Improvement:Cleaning the EGR system may not result in significant performance gains compared to EGR delete.

EGR Delete


  • Potential Performance Gains:Removing the EGR system can improve engine performance by increasing airflow and reducing intake restrictions.
  • Simplified Maintenance:EGR delete eliminates the need for ongoing maintenance and potential issues associated with EGR system components.
  • Enhanced Reliability:By eliminating a potential source of malfunctions, EGR delete may improve engine reliability and longevity.


  • Legal and Regulatory Issues:EGR delete may not be legal in all jurisdictions due to emissions regulations, and it can result in failed emissions testing.
  • Increased Emissions:Removing the EGR system can lead to higher nitrogen oxide emissions, contributing to air pollution and environmental concerns.
  • Warranty Voiding:EGR delete typically voids the manufacturer’s warranty, leaving the vehicle owner responsible for any repairs or maintenance.


Gray sports car with a focus on EGR and DPF cleaning

Revitalize your vehicle with 30 Minute DPF Clean! Enjoy smoother rides with expert DPF filter cleaning. Don’t forget to ask about our EGR filter cleaning and specialized Freightliner DPF cleaning services. Book now!