Re: What model ECM is this ?

[Team ZR1 <teamzr1@teamzr1.com>]

Scott,
my goal is just not to be able to tune the Snakeskinner for racing but to
learn as much as I can to
help others who own a ZR-1.
We are like stepchilds within G.M itself and with less then 7,000 ZR-1s made
we are on our own and have to
learn how to make code changes if its for racing or for mods for street
driving.

I would think that since the LT-5 is a 4 cam, 16 injector Lotus design that
other engiine management products may not be a just play and play with the
existing ECM.

With about 600 teammates within Team ZR-1 only Mark Romans is the only one
with any insight of the ECM and his is on the base Corvette.

I now see that G.M did major changes from '90 to the '91 which limits me to
even getting another bin file to do a compare, but as a whole I need to
boneup on the LT-5 ECM overall.

I did a compare on my E-prom and one from a 91 ZR-1 E-prom and can see some
things in common but I d not even know if I am selecting the right processor
from the C.A.T.S cross disassembler I am trying out.

John

Scott Knight wrote:

> I have to wonder if all the effort is worth it on this car.  Seems to me
> that if all of the 'special' LT5 functions are removed, that you would
> be better off using an aftermarket controller (SpeedPro is what I like,
> but there are others at least as good).  Then you can develop different
> maps and just squirt them in as needed instead of having to burn a
> chip.  Don't even have to shut the engine off.  There are some nice
> datalogging capabilities internal to the ECU as well.
>
> The thing I don't know about is the ignition (because I know little
> about the LT5 engine).  Seems to me that it is DIS of some sort.  I do
> know that the developer on the SpeedPro ECU is working on DIS for GM V-8
> using the Northstar DIS module which might be an option.  I am planning
> on using this on my 396" LT1 to get rid of the useless OptiSpark system.
>
> Later dates.
> --
> Scott Knight  mailto:scott@scottknight.com
> http://www.scottknight.com/ IRC:SS396man
> '95 Black Impala SS
> '94 Ducati 900SS CR