EGR, or Exhaust Gas Recirculation, is an emission control technology used in modern car engines. It works in conjunction with other emissions control technologies such as the car's lambda sensor and catalytic converter. While there are some perceived benefits to switching off an EGR system, the drawbacks to the environment and potentially your car's health are significant. It's important to weigh the risks and benefits before considering this option.
EGR delete: pros, cons, and legality
EGR delete is illegal in many regions due to stringent emissions regulations aimed at reducing air pollution. It is the process of disabling the exhaust gas recirculation system in a vehicle engine and typically involves removing the EGR valve and possibly modifying the engine software to prevent fault codes.
Proponents of EGR delete claim that it can improve engine performance by increasing airflow and reducing the build-up of carbon deposits, which in turn can lead to lower maintenance costs. However, it's important to note that removing the EGR system increases the emission of nitrogen oxides (NOx), which are harmful pollutants.
Is EGR delete legal in the UK?
In the UK, it is illegal to remove or disable the EGR valve, as tampering with any emissions control system violates the Road Vehicles (Construction and Use) Regulations. This makes the vehicle non-compliant with the emissions standards it was designed to meet, potentially leading to significant fines and legal issues.
Fines can be up to £1,000 for cars and £2,500 for vans and other light commercial vehicles. In addition, the vehicle could fail its MOT, making it illegal to drive until the problem is rectified, and insurance cover could be invalidated, leading to further financial and legal consequences.
Operating Mode: Electric
Supplementary Article / Supplementary Info Info 2: with EGR valve, with vacuum bypass, without clamp
Supplementary Article / Supplementary Info: with EGR cooler, with gaskets/seals
Emission Standard: Euro 5
Number of pins: 5
Weight [kg]: 3,88
Product line: ORIGINAL PART
Condition: New
Details
free delivery
Article № : 700435 EGR Module 700435
Car parts maker: VALEO
(6)
In stock
£ 284,18
incl. 20% VAT
Supplementary Article / Supplementary Info Info 2: High Pressure Side
Supplementary Article / Supplementary Info: with EGR cooler
Condition: New
Details
free delivery
Article № : EG10584-12B1 EGR valve EG10584-12B1
Car parts maker: DELPHI
In stock
£ 199,38
incl. 20% VAT
Supplementary Article / Supplementary Info Info 2: without vacuum bypass, without clamp
Operating Mode: Electric
Supplementary Article / Supplementary Info: without EGR cooler, with gaskets/seals
Supplementary Info: ORIGINAL PART
Emission Standard: Euro 5
Weight [kg]: 0,91
Condition: New
Details
free delivery
Article № : 700449 EGR valve 700449
Car parts maker: VALEO
(2)
In stock
£ 145,08
incl. 20% VAT
Operating Mode: Electric
Supplementary Article / Supplementary Info: without fastening/mounting material
Vehicle configuration line / variant: BW OE Quality
Condition: New
Details
Article № : 710327D/1 EGR valve 710327D/1
Car parts maker: WAHLER
(2)
In stock
£ 86,18
incl. 20% VAT
EGR delete benefits
There are a few reasons why someone might consider turning off an EGR system, despite the drawbacks and possible repercussions:
Perceived performance gains: EGR can slightly reduce engine power because some of the incoming air is replaced with inert exhaust gas. Disabling it can lead to a feeling of more responsiveness and acceleration. However, this gain may be negligible and come at a cost (see above).
Carbon buildup concerns: In some cases, EGR valves can malfunction and allow excessive amounts of exhaust into the engine, leading to carbon buildup on intake valves. However, properly functioning EGR systems are designed to minimise this. There are also other ways to address carbon buildup without disabling the EGR.
Cost of repair: If a mechanic diagnoses a faulty EGR system, replacing it can be expensive. Some people might see disabling it as a cheaper alternative, though this is a false economy given the potential problems it can cause.
EGR delete: pros and cons
EGR deletes offer a tempting allure for some car owners. The potential for increased power and supposedly lower maintenance costs due to a bypassed system can be appealing. However, these benefits come with significant disadvantages.
First and foremost, EGR deletes are illegal in many areas. They significantly increase harmful NOx emissions, contributing to air pollution and while they might address specific maintenance concerns, they can cause other engine problems in the long run. Any perceived power gains are likely outweighed by environmental and legal issues.
In conclusion, avoiding EGR deletes and maintaining a properly functioning EGR system (EGR valve) is the best course of action for a healthy car and a clean environment. Keeping your vehicle's catalytic converter and lambda sensor in good working condition further ensures that the vehicle adheres to emissions standards and minimises its environmental impact.
