edelbrock air gap divider and FITech

FWIW, the one pix I could find of the underside showed crossover passages connecting all 4 throats together.

BTW, if you are not running it much yet, then the rich AFR's are not surprising. The O2 sensor takes some time to warm up and FI systems will go rich while that is taking place to be safe, since they can't see the output free oxygen levels while the O2 sensor is still offline.

How does the AFR display? While the engine is warming up, the burn of the fuel is not complete like it is when running hot. This lack of complete fuel burn leaves more excess oxygen in the exhaust stream; the computer interprets this from the O2 sensor readings as being too lean, and may richen up the mixture. If the FiTech's computer is estimating the AFR readout from it's fuel command signal plus MAP sensor, and not directly interpreting from the O2 sensor, then it would show low AFR during warmup.