MEMS 3 Remapping

Remapping the MEMS 3 ECUs is possible without modification
Get in touch via email if you would like some guidance on that



MEMS 1.6 Remapping

I am currently working on a very positive looking solution to remapping the MEMS 1.6 ECU
Expect some progress or completion of this work in the coming weeks and months (Jan 2021 as of writing)



MEMS 2J Remapping

I am able to modify 2J ECUs to allow them to be remapped, if you would like me to carry this out for you then get in touch
I am based in the UK so you would need to either post or drop off your ECU for me to work on

As part of my work on these ECUs, I have a repeatable method of finding the "tables" or "maps", this is normally a time consuming or expensive process involving having to buy a "map pack"
I am in the process of building an editor for the ECU files/maps, in the meantime I can provide all table addresses/locations
Some tables are still unknown but the important ones such as fuel, timing, injector flow rate, injector dead time, idle speed setting have been realised

Once the modification has been carried out, a rewritable chip is installed which you can then remove from the ECU and reprogram as you desire
As part of this I provide a small programmer box in order to read and write to the chip
It is difficult to open the ECUs without damaging the lid slightly, so I have new laser-cut aluminium replacement lids which are much more robust than the original part and can be fitted and removed multiple times with ease
In the near future I hope to be able to install an additional cable to the ECU which would allow the maps to be edited without having to open the ECU ever again, the cable could be routed into the cockpit/dash area for ease of use with a laptop while sat in the driver's seat

During the modification process I will take a backup of the stock ECU data using a combination of BDM and also an external programmer with the correct clip
This ensures that when you receive your ECU back, it will function exactly the same as it originally did, and you will always have the original backup files if you would like to return it to a stock state

While working on the ECU I can reset the immobiliser code in the case that you do not want to use an immobiliser in future

At the moment I am not planning to offer any specific "tuned" calibrations, I am simply giving you the ability to either tune the ECU yourself or have someone qualified do it if not

I suggest owners of cars with modified engines should purchase a wideband lambda sensor and controller in order to more accurately monitor the air-fuel ratio of the engine
Most of these kits provide an "emulated" narrowband output wire which can be wired into the stock ECU. This allows the stock ECU to run normally but while providing you with a much more accurate reading of the AFR


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Mini MPI Stock Fuel Table

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Mini MPI Stock Ignition Map

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ROM Chip Programmer - First one built!


Contact: email me
Disclaimer: This website is not associated with Rover in any way. This exists because there is no support for these older cars/ECUs