A very English EFI system

[Robertson, Nigel]

John,

THis sounds excellent information. Can you send me everything you have and
what you did. The bin file and the schematic will be very useful, how did
you acquire such goodies.

Nigel R

_________________________________________________________________________
Nigel Robertson, BEng. CEng. MIEE.
Senior Engineer
Roke Manor Research Ltd
Old Salisbury Lane
Romsey
SO51 0ZN
Tel 01794 833524
Fax 01794 526943
email  nigel.robertson at roke.co.uk


> -----Original Message-----
> From:	John Andrianakis [SMTP:mc94633 at central.ntua.gr]
> Sent:	12 May 1999 21:47
> To:	diy_efi
> Subject:	Re: A very English EFI system
> 
> Once tried to reprogram the eprom in a Rover MGF VVC. Its a 27c1024 plcc
> 44
> item. It was really very difficult to locate the maps with the
> emulator.Most
> of the bin file is 16bit but some areas are 8bit and very confusing. In
> the
> process while changing the values on unknown map the car died. After that
> it
> refused to idle but would work ok otherwise. The ecu had to re learn how
> to
> idle. That was accomplished with the Rover MEMS diagnostic aquipment at a
> dealer and not very easily. It required not just a normal reset of all
> learned values but to treat it as a brand new ecu. The relearning took
> over
> 30 min while I watched the ecu trying to work in closed loop, continiously
> closing the range of a/f ratios used and responding faster. The engine
> started rough and smoothed out during the day.Unfortunately the owner got
> scared that something even worse might happen to his brand new car so we
> dropped the tuning left it normal. I have not come up to another one yet.
> I
> have the stock bin file if you want to see and  schematic of the wiring of
> the mems ecu but only one of the connectors(have to scan this one though).
> Hope I have helped.
> Regards,
> John Andrianakis.
> -----Original Message-----
> From: Robertson, Nigel <nigel.robertson at roke.co.uk>
> To: 'diy_efi at efi332.eng.ohio-state.edu'
> <diy_efi at efi332.eng.ohio-state.edu>
> Date: ÔåôÜñôç, 12 ÌáÀïõ 1999 4:38 ìì
> Subject: A very English EFI system
> 
> 
> >HI,
> >
> >This is my first post to this mailing list, although I have been reading
> all
> >your comments for some time now.  They have been both interesting and in
> a
> >lot of cases useful.
> >
> >This may be a long shot but have any of you guys had any dealings with
> the
> >Rover MEMS engine management system designed by Motorola.  I would like
> to
> >look more deeply at this system because I have two cars which use them.
> >However, the automotive industry in the UK is a very Secret society and
> >getting any information is virtually impossible.  Any information from
> >dealers is usually wrong because they do not have the technical expertise
> to
> >answer questions.
> >
> >So, I am trying this list as a last resort.  If anybody has opened one up
> I
> >would be interested in hearing from you, or , if anyone is interesting in
> >trying the US route of gaining info for me (Freedom of Information is a
> >wonderful thing) I would be most grateful.
> >
> >Thanks In Advance
> >
> >Nigel
> >
> >_________________________________________________________________________
> >Nigel Robertson, BEng. CEng. MIEE.
> >Senior Engineer
> >Roke Manor Research Ltd
> >Old Salisbury Lane
> >Romsey
> >SO51 0ZN
> >Tel 01794 833524
> >Fax 01794 526943
> >email  nigel.robertson at roke.co.uk
> >
> >