@AndyF Since you mentioned the Edelbrock Pro Flo system, which version was it? Was it on a small block or big block? What's your impression of it once you got it figured out?
I'm not a fan of the Edelbrock system since it doesn't have data logging. I don't see any point in buying an aftermaket EFI system if it doesn't allow you to data log events. Data logging is the key to tuning and problem solving.