Re: What model ECM is this ?

[Team ZR1 <teamzr1@teamzr1.com>]

Hi Dan,
            Looks like we're getting more and more of you out there with an
understanding of the "Heart of the Beast"
LT-5. The DLC connector is located on the drivers side mounted to the bottom
of dash panel.
It is a 12 pin from 90-93 models and then G.M switched it to the 16 pin in
94 for the coming of OBD II.

To make it tougher for me, the SnakeSkinner does not have the secondary
vaccum pump and who knows how they
re-worked the code for the other 8 injectors. A stock ZR-1 the code would
not turn on the other injectors or secondary system
till aout 2,200 RPMs, I have no idea what the code does on the S.S

Yes Please send me a bin on that '90 if you can, in the end maybe we can
beat this and have a knowledge base on doing
code changes for the ZR-1.

Thanks for the insight.

John

Daniel Ciobota wrote:

> John,
>
>  I've been following this thread sporadically, so I don't know if this
> is superfluous or not.
>
>  I haven't had much time lately to play with my obd1 goodies (thanks
> Andrew, Craig and Paul!), but I can get successful bin dumps out of my
> 89 L98 vette.  It just so happens that a friend of mine (John Murphy,
> for all you zr1netters) recently bought a 90 zr1.  Sooo, if I can figure
> out where the connector is, I can probably get a bin dump and you can
> compare that against your chip also, for double checking.  The only
> thing is, the chip he's running is a Doug Rippie Motorsports aftermarket
> chip.  You may want to talk to Doug Rippie as well, maybe he can give
> you a few hints about your ecm.
>
>  One thing to note for sure, the zr1 ecm code is significantly different
> from any other corvette model, due to the dual injector setup.  There
> should definitely be two separate fuel tables, one for each set of
> injectors, and probably also a table for the turn on event for the
> second set of injectors.  Other than that, I'm as much in the dark as
> anyone else here.
>
>  Let me know if you want me to try and do the DRM chip dump.  It's at
> least another data point to use.
>
> Daniel