Re: EPROM Programming

[romans@starstream.net (Romans, Mark)]

Corvette and Camaro Bin's have much different spark maps for starters
because
the corvette's had aluminum heads. If you use a vet prom on a camaro engine
you will
experience detonation. I wouldn't worry about trying to run on 4 cyl's until
you get it
running right on 8.  Terry Kelly makes a nice editor for the 730 ecm.
I would suggest mounting the 02 sensor close to where more cyl's come
together
to get a more accurate measurement of a number of cyl's.  730 ecm has to
capability
to run hwy fuel which allows you to command a much leaner than stoich afr at
cruise.
Mark
----- Original Message -----
From: <WEG1192@aol.com>
To: <gmecm@diy-efi.org>
Sent: Thursday, August 03, 2000 10:58 PM
Subject: Re: EPROM Programming


> Mark,
>
> Yea, I have just about decided to put a VSS in also. I asked Howell,
> Turbocity, TPIS, etc., if they recommended a VSS and they said only if I
had
> an auto, but it looks like the VSS is the only thing that will fix my
> unstable idle.
>
> My ECM is a 1227730, but the chip came out of a 7727 Corvette ECM that I
> bought and sold on Ebay. As for the EPROM .bin file, all I know is the guy
> said it was a high performance chip with VATS and EGR disabled.
>
> Actually, the reason I bought TPI to begin with is I was trying to improve
my
> MPG by at least 50%. I was going to run the engine on 4 cylinders at
cruise
> similar to the Cadillac 4-6-8 system from years back. I'm still working on
it
> but the O2 sensor has to be moved to complete my experiment. Can I mount
the
> O2 say only 4 inches from the exhaust port on cylinder #1? I've heard both
no
> and yes, so I'm still waiting for a good reason not to.
>
> ----- End of forwarded message from owner-gmecm@diy-efi.org -----
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