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

MEMS 2J ROM file editor

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.
This is being offered at £300 which includes ECU modification and insured return postage within the UK.
The modification includes a programmer extension board fitted within the ECU, the transfer of your original ECU data to a new chip, a brand new laser cut aluminium ECU lid, and a weatherproof USB connector.
This allows ECU map updates to be carried out via a USB cable, the ECU does not need to be opened again.
I am based in the UK so you would need to either post or drop off your ECU for me to work on.

I can also offer a less impressive modification which involves soldering a chip socket into the ECU and providing a rewritable chip and external programmer, this is being offered at £200
This method means you need to open the ECU and remove the chip each time you want to make an update or map change.

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

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

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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2J ECU with new cover and weatherproof USB connector

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Modified 2J ECU with internal programmer

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Mini MPI Stock Fuel Table

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Mini MPI Stock Ignition Map

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External ROM Chip Programmer


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