Rover MEMS Diagnostic and Remapping

Welcome

Here is a collection of information, software, products and services surrounding Rover MEMS ECUs.
This applies to cars (engines) from around 1991-2000+ including Rover (Mini, Metro, 100, 200, 400, 600, 800), MG (F, TF), Lotus Elise, Kit cars - Caterham, Morgan, Westfield etc

I have spent time working on these ECUs and can now provide diagnostics software for all of the ECUs listed
I can also modify the 2J type ECU to allow them to be remapped
The MEMS 3 ECUs can be remapped over the diagnostic port without making any physical changes
I am currently working on the older 1.6 MEMS ECU with a hope to allow remaps to those too

Please enter either the Diagnostics or Remapping sections of the website to learn more
Pictures and a description of the ECU types are listed below

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MEMS 1.2 ECU

VERY early SPI cars (1991) without Catalytic Converters- 1x36 pin connector, smooth lid, X on the base/bottom, vacuum connector on the corner

MEMS 1.3 ECU

Tend to be used on early SPI cars (1992-1993) - 3 pin round diagnostic connector - 1x36pin and 1x18pin connector - lines and screws in the lid - vacuum connector between plugs

MEMS 1.6 ECU

Used mostly for SPI cars and some early MPI cars (1993-1999) - 3 pin round diagnostic connector - 1x36 pin connector, sometimes also 1x18 pin connector - lines in the lid, but no screws in the lid - vacuum connector next to first plug

MEMS 1.9 ECU

Used in MPI cars - 16 pin "OBDII/OBD2" style diagnostic connector - cross on top, vacuum line next to the main connector

MEMS 2J ECU

Uused in Mini MPIs and cars with VVC - 16 pin "OBDII/OBD2" style diagnostic connector - 2x36pin connectors, left black, right red - large X in the lid - no vacuum connector

MEMS 3 ECU

Used in newer MPI cars with/without VVC - 16 pin "OBD" style diagnostic connector - no vacuum connector