Help and advice, your EGR questions answered
Most people get in touch with us because something has gone wrong: a warning light on the dash, a car that's sluggish or smoky, or a garage quoting them hundreds of pounds to fix an EGR fault. Before they commit to anything, they want to understand what they're dealing with.
That's fair. So we've put together a set of honest, straightforward guides that answer the questions we get asked most. No jargon, no pressure, just the information you need to make the right call for your vehicle.
What is an EGR valve and why does it cause problems?
The EGR (exhaust gas recirculation) valve is an emissions control component fitted to most modern diesel and some petrol engines. Its job is to recirculate a portion of exhaust gases back into the intake manifold, which lowers combustion temperatures and reduces nitrogen oxide (NOx) emissions.
In theory, it works well. In practice, diesel exhaust gases carry a lot of soot and carbon, and over time that carbon builds up inside the valve and the surrounding pipework. The valve sticks, fails to open or close properly, and the engine management system flags a fault. The result is reduced performance, increased fuel consumption, rough idling, or a warning light, sometimes all four at once.
Once the carbon build-up is severe enough, cleaning the valve buys only limited time before the same problem returns. That is when many vehicle owners start looking at their options.
Guides
What does an EGR valve do?
A full explanation of the EGR system: what it does, why it exists, and what happens when it fails. If you want to understand the problem before deciding how to fix it, start here.
Is EGR delete legal in the UK?
The honest answer, not the one that just tells you what you want to hear. EGR delete via ECU remap is legal for off-road and track use only. We explain exactly what that means, what the law says, and what to consider before going ahead.
EGR delete and your MOT
What actually happens at MOT test when a vehicle has had an EGR delete? We cover the emissions test, what testers check, and how this affects your vehicle's roadworthiness status.
Talk to us
We have worked on more than 7,000 vehicles across Greater Manchester and within a 40-mile radius of Eccles. Our mobile EGR delete service, carried out via ECU remap at your home or workplace, is priced at £220 with no call-out fee.
If you have a question that isn't covered in the guides, or you want to find out whether your vehicle is suitable, call us on 0161 694 7331 or use the enquiry form below. We'll give you a straight answer.
Important: EGR delete is for off-road and track use only and must not be used on vehicles driven on public roads.