[Mark Romans]

Hi Bruce:  First you need to know where you are as far as fuel and spark, so
you need to get something like Diacom.  I originally used a tech 1 and took
snapshots to look at,  the Tech1 takes a snap shot of about 12 seconds.
Diacom will record up to 3 minutes.  This lets you see if there is any
detonation, look at 02 sensor readings etc.  Without it, where do you go?
Then I bought a copy of Master Tune software, it allows me to tune the fuel
and spark and some other parameters too.
Mark
87 Vet, 4+3 trans.  13.42 @ 114,  per G-tech.  (Stock 14.14 @ 101.8 best)
-----Original Message-----
From: Bruce Wilcox (EUS) <EUSBEW at am1.ericsson.se>
To: 'gmecm at efi332.eng.ohio-state.edu' <gmecm at efi332.eng.ohio-state.edu>
Date: Monday, April 05, 1999 1:51 PM


>Hi Guys,
>
>I have just joined the gmecm group. My car is a 1987 TPI IROC-Z Camaro. The
>engine is fairly modified and I would like to learn how to change the
>ignition and fuel curves. Buying custom EPROMs is expensive ($300.00 to
>$500)!
>
>Has anyone deciphered the P4 ECM??
>
>Thanks and Best Regards,
>
>Bruce Wilcox
>
>