Dave, Well I replaced the Cap, Rotor and Coil.. and it still surges/hunts at what is supposed to be idle. When I look at the timing during this time it fluctuates from about 12-15 degress advanced. When it gets warmed up it won't stay running (runs for a few minutes and shuts off) it will fire right back up and continues doing the same. The fuel pressure is about 13-14 psi. The injectors seem to be spraying the same and is a cone shape pattern. I got the alternator hooked up so the voltage issue should be resolved. Is there a way to monitor cylinder firing, that would be helpful.
The ECM that I have is a 1228747 with bin code
AKWC... I couldn't find that bin anywhere to load into TunerPro. Was doing a search and came accross this forum
http://www.fullsizechevy.com/forum/g...1228747-a.html that had your fingerprints all over it. Do you know where I can get this bin, does it really matter or can I use what I was using when I data logging some information that you looked at for me?