Setting up the FAST software is taking longer than I expected. I went through the setup procedure and then sent some screenshots off to David Page at FAST/CompCams. He is a busy man but has been very patient and helpful.
I was using the latest version of C-COM (V2.051) and David said I had to do a firmware upgrade flash on my XFI box. Got that done, but some setup parameters still didn't look right, so David took my baseline tune and modified it and sent it back which fixed everything.
The only outstanding issue is that my MAP sensor is reading low (eg actual pressure is 102kPa and the sensor reads 92kPa)
I've got another on order and it should be here tomorrow.
Once I get that sorted out, I can bolt the intake manifold back on, install the rad, fill with coolant and start the countdown to "Ignition sequence start"