Introduction/Hello Lee

[John Andrianakis]

The ecu calculates the checksum contantly so you will have to correct in
another part of the eprom before starting the engine so that it doesnt go
into limp home mode. Also if you have turbocharged the engine over 3-4 psi
if I remeber correctly the ecu will see the higher voltage from the map
sensor as a failure and also go into limp home mode. To get around this you
need a device that clamps the map sensor voltage. Try
www.teamfc3s.org/T2/articles/fcd/diy_fcd.htm
Sorry for responding so late, just got back from a holiday and found 1500
messages in my mailbox.
regards,
John Andrianakis
johnandrianakis at hotmail.com

----- Original Message -----
From: justin ivan <vlkslvr at hotmail.com>
To: <diy_efi at diy-efi.org>
Sent: 24 Ïêôùâñßïõ 2000 03:58
Subject: Re: Introduction/Hello Lee


> Hmm,
> A lot of ecu's do have checksums. Starting to get outside of my knowledge
> base. Let me know what you find out.
> Justin
>
>
> >From: "Lee Hamrick" <lee at redhatracing.com>
> >Reply-To: diy_efi at diy-efi.org
> >To: <diy_efi at diy-efi.org>
> >Subject: Re: Introduction/Hello Lee
> >Date: Mon, 23 Oct 2000 18:42:54 -0700
> >
> >Zdyne does have an awesome program, as well as Hondata... I'll try giving
> >them both a call and see what I can muster up.  I've gotten to the point
> >where I've found the fuel and spark maps on the EPROM, but I can't seem
to
> >adjust them with the check engine light coming on and the ECU going into
> >limp home mode.  Do most maps have some kind of checksum?  Thanks!
> >
> >-Lee Hamrick
> >----- Original Message -----
> >From: Chris Conlon <synchris at ricochet.net>
> >To: <diy_efi at diy-efi.org>
> >Sent: Monday, October 23, 2000 1:13 PM
> >Subject: Re: Introduction/Hello Lee
> >
> >
> > > At 11:31 AM 10/23/00 -0700, Lee Hamrick wrote:
> > >
> > > >    We are on about the same path then, as I am also trying to modify
> >the
> > > >stock Honda ECU to be able to handle boost.  I've been able to modify
> >the
> > > > ...
> > >
> > > Depending on how much you want to know and how nice you are, you might
> > > get some help from these people:
> > >
> > > www.zdyne.com
> > >
> > > They hack Honda ECUs and appear to have it figured out pretty well.
> > >
> > >    HTH,
> > >    Chris C.
> > >
> > >
>
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