BMW EGR delete
BMW diesel engines have an EGR problem. The B47, N47 and M57 units that power the majority of BMW's diesel range are reliable in many respects, but the EGR system is a consistent weak point. When the valve or cooler fails, the engine management system throws fault codes, the car drops into limp mode, and you start seeing the symptoms that brought you here: rough idle, loss of power, black smoke from the exhaust, and a warning light that will not clear.
We carry out BMW EGR delete via ECU remap. The EGR circuit is removed from the software permanently. We come to you, anywhere within our 40-mile coverage area from Eccles. £220 flat, no call-out charge.
This service is for off-road and track use only. EGR delete is not legal for vehicles used on public roads.
Which BMW engines are affected?
N47 (2.0d units, 2007 to 2015)
The N47 is the engine most commonly brought to us for EGR work. It powered the E90/F30 3 Series, E84 X1, E81/F20 1 Series and various other models in 2.0d form. EGR valve failure on the N47 often presents alongside carbon build-up in the intake, which compounds the fault. Once the EGR is removed from the software, the valve no longer cycles and the issue does not return.
B47 (2.0d units, 2014 onwards)
The B47 replaced the N47 and is fitted to the F30/G20 3 Series, G01 X3, and a range of other current-generation diesel models. The related B57 six-cylinder covers the G05 X5 30d and 40d. EGR faults are well documented on both engines, typically presenting as P0400 or P0403 codes. The ECU delete is the same process as the N47 and equally effective.
M57 (3.0d units)
The M57 straight-six found in the E60 5 Series, E70 X5 and E65 7 Series is a more complex engine but EGR issues are common, particularly on higher-mileage examples. EGR cooler failure is the more frequent fault on this unit. The ECU delete removes both valve and cooler from the software map.
What an ECU remap actually does
Replacement EGR valves and coolers fix the hardware. The software still expects the EGR to be present and active, which is why physical replacement works only until the new part fails too, usually in another 30,000 to 50,000 miles.
An ECU remap takes a different approach. We connect to your BMW's engine management unit and rewrite the relevant maps so the ECU no longer expects or calls for EGR function. The engine runs cleanly without it. There are no fault codes and no limp mode, because as far as the ECU is concerned, the EGR system does not exist.
The physical valve remains in place. We do not remove or blank anything mechanically.
BMW models we cover
We carry out EGR delete on the following BMW models, among others:
The process
There is no workshop visit. We come to you at a time that suits.
Call 0161 694 7331.
Tell us your BMW model, engine code and the fault codes or symptoms you are dealing with.
We confirm the vehicle is suitable and book an appointment at your location.
We connect to the ECU on-site, carry out the remap, and verify the fault is cleared.
The whole process typically takes under an hour.
We cover Greater Manchester and surrounding areas within a 40-mile radius of Eccles. Same-day and next-day appointments are available in most cases.
Price
BMW EGR delete is £220 flat. No call-out charge. No additional fees for engine type or complexity.
Frequently asked questions
Will the EGR delete show on an MOT?
My BMW has already had the EGR valve replaced twice. Will the remap still work?
Do you need to take anything apart?
What fault codes does EGR failure typically trigger on a BMW?
How long does the appointment take?
BMW models we cover
Pick your model: