Welcome to rovermems.com
The ECUs are referred to and marked as "MEMS" ECUs which stands for Modular Engine Management System
Rather than building a new ECU for every car, a base ECU was used with slightly different components and software depending on the application
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
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Diagnostic applications
I have spent time working on these ECUs and can now provide diagnostics software for all of the engine ECUs listed as well as the RC5 airbag module, and Bosch 5.3 ABS controllers
See the section of the website:
Diagnostic applications
Remapping
I am also working to provide the ability to remap the ECUs, more information is in the section of the website
Remapping
Discussion/tech info
Gathering some discussion/tech info style posts here
Discussion posts
ECUs/Modules
There is a mixture of ECU versions across various cars including Rover Mini, Metro, 100, 200, 400, 600, 800, Land Rover, Lotus, MG, MGF
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
RC5 Airbag module
Used in MPI and JDM Minis as well as other Rovers
5AS Immobiliser
Used in many Rovers including SPI and MPI Mini
Bosch 5.3 ABS controller
Used in MGF and other cars
Disclaimer: This website is not associated with Rover in any way. This exists because there is no support for these older cars/ECUs
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