Well that was it, basically. Starting from the V6 base settings, I set the system and it works great. I haven't changed any accel pump settings, AFR, nothing, I just wanted to see what it would do, seems fine. No over richness, runs pretty good. I will probably tweak it a bit at some point, but I want to drive it for awhile and let it learn. It does seem to improve over time, idle etc. I'm amazed that the tech guy didn't tell me that V6 setting existed, he said simply to change the number of cylinders to 6 from the base (v8, 355ci) setting. Of course, in retrospect this seems obvious, but I didn't know to even look for such a setting.
NOTE: The FCC is getting too hot. After a 10 mile drive in the 90 degree heat, my low pressure gauge reads zero, very likely fuel boiling in the FCC. The FCC is reading 130 degrees (but it sure feels hotter to touch). I may have to go to a return line system to keep the fuel cool. But that is trivial now that I have the TBI working well. Two options are 1) to modify the FCC so the low pressure fuel pump recirculates fuel back to the tank through the FCC (see: https://www.youtube.com/watch?v=s77BRWlI81c
), or 2) ditch the FCC and go with a high pressure inline fuel pump mounted back on the frame rail to recirculate through the TBI. I'll probably try option 1 first, since I already have the FCC and it is already plumbed for return, just need to modify it and put the return line back at the sending unit where it was.
I will be putting my Webers/intake up for sale soon.