Re: What model ECM is this ?

[Mark Romans <romans@pacbell.net>]

John: What year is the car?  If you have the shop manual for that year car,
you should be able to wire in the connectors for the aldl connector so
diacom can link.  I am sure if a tech1 will link, diacom will link, only
diacom gives more parameters.
Mark
-----Original Message-----
From: Team ZR1 <teamzr1@teamzr1.com>
To: gmecm@efi332.eng.ohio-state.edu <gmecm@efi332.eng.ohio-state.edu>
Date: Friday, January 14, 2000 10:15 PM
Subject: Re: What model ECM is this ?


>Bruce, thanks for the reply ..
>
>Yes the ECM for the C4 Corvettes is in the engine bay.
>I cannot use my Diacom Plus because this is a pure race designed ZR-1
>and because of that G.M engineering removed the other processor (CCM) and
>all smog functions, etc. Thus no communcations via DLC connector, maybe a
Tech I
>
>but not sure on that.
>Since the only part of the car that is stock is the frame and rear end, its
hard
>to tell where all the
>parts like the ECM began life.
>
>John
>
>Bruce Plecan wrote:
>
>> Is there a series of numbers like 1228331, on a white paper tag on the
>> outside?.
>> Is this a water resistant ecm, as in mounted under the hood?.
>> Barring another opinion, I'd use the 1227730 info as a guide for what you
>> have...
>> The only way I know to actually absolutely verify what you think is going
on
>> is to burn a chip, and try it with diacom+ running, or build a ecm bench.
>> Short cut to burning prom is a eprom emulator, but $$.
>> Grumpy
>>
>> | The ECM in my Snakeskinner ZR-1 Corvette has these numbers on the PCB
>> towards
>> | the end where E-prom sits.
>> | By barcode : 309023101908316
>> | Corner of PCB is : IE315 P-5
>> | More towards center : 61C315 P-8 ( I think its an 8 )
>> | So which model is it, what processor does it use ?
>> | Also I downloaded this disassembler off of the TunerCat website and I
can
>> not
>> | tell if its disassembling correctly.
>> | Which proocessor do I choose and is there any thing I have to change in
>> the
>> | setup screen ?
>> | Can I tell if the output code is correct ?
>> | Thanks,
>> |              John Rovner
>