Another convert Andy!
Best thing I ever did to my car was convert it to EFI. I found that for cruise and acceleration the system tuned itself well, but it took a bit of manual tuning (computer) to get the idle nice, particularly with a lumpy, low vacuum engine.
Some of the manual parameters are only available via laptop. They aren't on the handheld controller. I'm unsure about the new Sniper, but I know the Terminator system could be firmware upgraded and connected to laptop via usb.
There's stacks and stacks of information on the Holley EFI forums pages. https://forums.holley.com/forumdispl...?13-Holley-EFI