DIY_EFI Digest Monday, September 20 1999 Volume 04 : Number 534 In this issue: Motronic 1.5 chip help wanted Re: Motronic 1.5 chip help wanted TPI to Vortec conversion See the end of the digest for information on subscribing to the DIY_EFI or DIY_EFI-Digest mailing lists. ---------------------------------------------------------------------- Date: Sun, 19 Sep 1999 20:21:27 +0100 From: "Alan Smith" Subject: Motronic 1.5 chip help wanted This is a multi-part message in MIME format. - ------=_NextPart_000_004A_01BF02DC.8D7E7980 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable I am trying to disassemble a Motronic M1.5 ECU from a 1990 Vauxhall = Cavalier. The ECU is based around an 80515 processor. The disassembled code doesn't make much sense. I think it may have = something to do with address translations between the 80515 and the = 27256 eprom. There is a 68 pin chip made by Harris which I think may be = involved. Does anybody know anything about this ECU ? I would also appreciate help in identifying the chips in the ECU, in = particular the injector drivers. If anybody has any M1.5 bin files I'd appreciate a copy to look at. Alan Smith =20 - ------=_NextPart_000_004A_01BF02DC.8D7E7980 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable

I am trying to disassemble a Motronic M1.5 ECU from = a 1990=20 Vauxhall Cavalier.

The ECU is based around an 80515 = processor.

The disassembled code doesn't make much sense.=20 I think it may have something to do with address translations = between the=20 80515 and the 27256 eprom. There is a 68 pin chip made by Harris = which I=20 think may be involved. Does anybody know anything about this ECU = ?

I would also appreciate help in identifying the = chips in the=20 ECU, in particular the injector drivers.

If anybody has any M1.5 bin files I'd appreciate a = copy to=20 look at.

Alan Smith

- ------=_NextPart_000_004A_01BF02DC.8D7E7980-- ------------------------------ Date: Sun, 19 Sep 1999 12:22:10 -0700 (PDT) From: Orin Eman Subject: Re: Motronic 1.5 chip help wanted > I am trying to disassemble a Motronic M1.5 ECU from a 1990 Vauxhall = > Cavalier. > The ECU is based around an 80515 processor. > The disassembled code doesn't make much sense. I think it may have = > something to do with address translations between the 80515 and the = > 27256 eprom. There is a 68 pin chip made by Harris which I think may be = > involved. Does anybody know anything about this ECU ? Go look in the archives... search on "land shark". That should pull up some motronic info. Orin. ------------------------------ Date: Sun, 19 Sep 1999 18:06:23 -0700 From: "Bob Groger" Subject: TPI to Vortec conversion Does anyone have any insight into putting a 87-up TPI manifold on the L31 Vortec heads? Seems like the best deal around at $400\pair complete. I have heard the ports are raised .100, and the bolt holes are now vertical. Can it be done with minimal work? Bob Groger TPI 350\Mercedes SEL Project ------------------------------ End of DIY_EFI Digest V4 #534 ***************************** To subscribe to DIY_EFI-Digest, send the command: subscribe diy_efi-digest in the body of a message to "Majordomo@xxx. 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".