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From: lusky@ccwf.cc.utexas.edu (Jonathan R. Lusky)
Newsgroups: sci.electronics,rec.autos.tech
Subject: Re: Hacking Car ECUs
Message-ID: <47719@ut-emx.uucp>
Date: 23 Apr 91 18:23:36 GMT
References: <47590@ut-emx.uucp> <1991Apr14.224844.3126@coral.bucknell.edu> <02~_0R|@warwick.ac.uk> <khan.672161044@mrcnext> <1991Apr22.131521.2622@ux1.cso.uiuc.edu>
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In article <1991Apr22.131521.2622@ux1.cso.uiuc.edu> tmkk@uiuc.edu (Scott Coleman) writes:
>
>In article <47590@ut-emx.uucp> lusky@ccwf.cc.utexas.edu (Jonathan R. Lusky) writes:
>> All of the programmable ECM's I've seen have an rs-232 port and are intended
>>to be used with a pc-compatible laptop.
>
>That's interesting - does the same hold true for the computers found in
>most cars these days, or are there general exceptions (i.e. Fords have the
>RS232 port, GM cars don't)?

Sorry, the only way I know of to reprogram a factory ECM is to burn a new prom
and pop it in...  I was only referring to aftermarket systems (Electromotive,
Haltech, etc).