'97 Ford PCM software modding?

[Shirley, Mark R]

You're lucky because the 97 Taurus uses the EEC-5 processor, which
is flash upgradable.  You're unlucky because this is a pretty complex 
ECM that will probably be very tough for you to crack.  I'd refer you
to the EEC-4 list for starters, maybe there's somebody there with experience
on the EEC-5's.  I wish I could help more, but my contacts at Ford are 
probably going to be unwilling to help crack a production ECM.

> -----Original Message-----
> From: Tom [mailto:tleser at purdue.edu]
> Sent: Thursday, September 13, 2001 1:08 PM
> To: diy_efi at diy-efi.org
> Subject: '97 Ford PCM software modding?
> 
> 
> Hi all, I am new to this list and found this a few weeks back 
> after looking
> around for months for something like this and stumbled up it. 
>  But basically
> I have a '97 Ford Taurus with a code of NXZ1, I currently 
> have a superchip
> but being a EET major at Purdue I think it would be nice if I 
> could get away
> from chips (due to how expensive custom programming is) and possibly
> changing the program of the PCM around myself?
> 
> I have read most of the book "understanding automotive 
> electronics" and
> while most of the book is really good it touches very little 
> on the actual
> computer itself.  So I'm pretty much a newbie about this.  
> But I have spoke
> with my microprocessors class Prof. and he was saying that if 
> I could locate
> the chip we have the equipment to pull the assembly code from 
> it.  I DO know
> some C and and still learning a lot more, but basically where 
> do I start for
> something like this?  I know the chips are accessible from 
> underneath the
> PCM but does anyone possibly know what brand uC it uses?  
> Than from there
> how would I go about editing parameters for say an 80mm MAF 
> in assembly?
> Will my C knowledge even be useful since C is cross-platform? 
>  Thanks guys,
> 
> Tom
> 
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