Tim,
Unfortunately I don't have an answer for you at this point, but I can send you somewhere that I am sure can help. Go here:
http://www.thirdgen.org/techboard/tbi/ You will not believe what these guys know about TBI. There are guys there making 400+hp with single factory TBI. I just put a Reman 350 in my 88 Camaro driver that came stock with a 305. Those guys helped me get setup to datalog and program my own chips to make it run flawlessly with the 305 TBI and injectors. It's gopt good power and gets 20mpg around town. Not bad. If you have a laptop and some ok solder skills you can download free datalogging software and build a $15 ALDL cable to see exactly what is going on realtime. Anyway check it out. Hope it helps.