Re: What model ECM is this ?

[Mark Romans <romans@pacbell.net>]

If you have a shop manual you should be able to look at the diagrams of the
pinouts for the ecm and label the wires and wire the aldl connector.  I
would bet that they did their form of diacom to look at what the engine is
doing during tuning.
Mark
-----Original Message-----
From: Team ZR1 <teamzr1@teamzr1.com>
To: gmecm@efi332.eng.ohio-state.edu <gmecm@efi332.eng.ohio-state.edu>
Date: Saturday, January 15, 2000 12:08 AM
Subject: Re: What model ECM is this ?


>The wire loom is all hand made so no stock color coded wires here ( they
liked red and
>blue colors )
>There is 3 wires, one is to ground and I tracked one to the ECM but under
no condition
>could I get it to talk to
>the Diacom at all. I used both 12 pin DLC connectors that Diacom comes with
for C4
>Corvettes before '94 when they
>begin to move to OBD II and 16 pin DLC connectors.
>I would bet they used a CAMs which is a G.M tech repair computer but may
have
>different Baud,  handshaking, who knows.
>They would not have been allowed to trap ECM info while in the race and may
have just
>did what they had to on pit stops,
>though for my racing I would liked to have the Diacom functional esp for
adjusting
>fuel and timing.
>Being I run races from sealevel to about 6,700 feet I need to be able to
burn chips
>for the type of race and its location
>
>Thanks,
>
>John
>
>Shannen Durphey wrote:
>
>> Ahh.  Maybe it's set up like the Australian 808.  First, how many
>> wires in the DLC, and what colors are they?  Second, have you tried
>> getting trouble codes by grounding a + b in the DLC?  Third, it's hard
>> to imagine a race team not caring about engine data.  Maybe they had
>> an alternate way to see what's happening?
>> Shannen
>>
>