DIY_EFI Digest V5 #1
Don.F.Broadus at ucm.com
Don.F.Broadus at ucm.com
Tue Jan 4 13:52:08 GMT 2000
A little trivia on the 1600 MR2 it looks stunningly similar to the Lotus
twin cam engine of years ago. You might want to see if the lotus page has
any info. I could be way off on this but looking at the Lotus twin cam book
and an 1600 Toyota twin cam I got from the yard they seem a direct copy. My
$.02
Don
> -----Original Message-----
> From: DIY_EFI-Digest-Owner at efi332.eng.ohio-state.edu
> [SMTP:DIY_EFI-Digest-Owner at efi332.eng.ohio-state.edu]
> Sent: Tuesday, January 04, 2000 4:00 AM
> To: DIY_EFI-Digest at efi332.eng.ohio-state.edu
> Subject: DIY_EFI Digest V5 #1
>
>
> DIY_EFI Digest Tuesday, January 4 2000 Volume 05 : Number
> 001
>
>
>
> In this issue:
>
> ECU's
> Re: Lucas EFI ECU
>
> See the end of the digest for information on subscribing to the
> DIY_EFI or DIY_EFI-Digest mailing lists.
>
> ----------------------------------------------------------------------
>
> Date: Sun, 2 Jan 2000 12:14:47 +1300
> From: "Nicholas Parker" <nrparker at xtra.co.nz>
> Subject: ECU's
>
> This is a multi-part message in MIME format.
>
> - ------=_NextPart_000_0027_01BF551A.F5EE2980
> Content-Type: text/plain;
> charset="iso-8859-1"
> Content-Transfer-Encoding: quoted-printable
>
> Hi List, =20
> Is there an ECU out there somewhere that I can plumb into my '1600cc =
> 1987 Toyota MR2 Supercharged.
> I would like MAP as opposed to AFM it currently has, 4 cyl sequential =
> injection and possibly 2 or 4 coil ignition. The main thing is =
> availability of aftermarket utilities to modify / customize my ECU.
> The current ECU has an 8051 derivative I'm told, and tables are onboard =
> and so can't be modified. I know this is possibly a stupid question but =
> does anybody have or know how to obtain the code from this ECU. I had =
> to try, but Toyota weren't helpful.
> I'm guessing with certainty that various lock bits on the ECU's 8051 MCU =
> are set. Is there any 'secret' method for dumping the code out of such =
> chips ? How about executing external code (via /EA pin) that is a jump, =
> then toggling the /EA pin at this point, having previously programmed =
> into the end of the 8051 ROM (only if contents are FFh) a loop that =
> dumps the contents ?
>
> Nick.
>
> - ------=_NextPart_000_0027_01BF551A.F5EE2980
> Content-Type: text/html;
> charset="iso-8859-1"
> Content-Transfer-Encoding: quoted-printable
>
> <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
> <HTML><HEAD>
> <META content=3D"text/html; charset=3Diso-8859-1" =
> http-equiv=3DContent-Type>
> <META content=3D"MSHTML 5.00.2314.1000" name=3DGENERATOR>
> <STYLE></STYLE>
> </HEAD>
> <BODY bgColor=3D#ffffff>
> <DIV><FONT size=3D2>Hi List, <BR></FONT><FONT size=3D2>Is =
> there an ECU=20
> out there somewhere that I can plumb into my '1600cc 1987 Toyota MR2=20
> Supercharged.<BR>I would like MAP as opposed to AFM it currently has, 4 =
> cyl=20
> sequential injection and possibly 2 or 4 coil ignition. The main =
> thing is=20
> availability of aftermarket utilities to modify / customize my =
> ECU.<BR>The=20
> current ECU has an 8051 derivative I'm told, and tables are onboard and=20
> so can't be modified. I know this is possibly a stupid =
> question but=20
> does anybody have or know how to obtain the code from this ECU. I =
> had to=20
> try, but Toyota weren't helpful.<BR>I'm guessing with certainty that =
> various=20
> lock bits on the ECU's 8051 MCU are set. Is there any 'secret' method =
> for=20
> dumping the code out of such chips ? How about executing external =
> code=20
> (via /EA pin) that is a jump, then toggling the /EA pin at this point, =
> having=20
> previously programmed into the end of the 8051 ROM (only if contents are =
> FFh) a=20
> loop that dumps the contents ?</FONT></DIV>
> <DIV> </DIV>
> <DIV><FONT size=3D2>Nick.</FONT></DIV></BODY></HTML>
>
> - ------=_NextPart_000_0027_01BF551A.F5EE2980--
>
> ------------------------------
>
> Date: Sat, 1 Jan 2000 18:36:41 +0000
> From: "Roderick Warner" <Roderick_Warner at notes.teradyne.com>
> Subject: Re: Lucas EFI ECU
>
> Is there anyone who has or knows where to get hold of a schmatic ( and
> ideally
> some notes ) for the Lucas ECU as used on the Rover V8 engine. The ECU in
> question is part # 83986A for the flap type air flow meter. Similarly if
> there
> is experience of failure modes I would be very interested as I am in the
> process
> of fitting injection to a previously carb'd engine and am suffering very
> rich
> running , its ok when bliping the throttle. When I move the air flap( by
> hand)
> it appears to have no effect on the running , though the voltages do
> change over
> the specified range- hence I suspect the ECU. I need to get a scope onto
> the
> pulses to see their duration and changes ( if any). Any thoughts please ?
>
> Rod Warner
>
> ------------------------------
>
> End of DIY_EFI Digest V5 #1
> ***************************
>
> To subscribe to DIY_EFI-Digest, send the command:
>
> subscribe diy_efi-digest
>
> in the body of a message to "Majordomo at efi332.eng.ohio-state.edu".
>
> A non-digest (direct mail) version of this list is also available; to
> subscribe to that instead, replace "diy_efi-digest" in the command
> above with "diy_efi".
More information about the Diy_efi
mailing list