EFI help

I like Holley, but there is one huge issue, which I wish they would reconsider............the ECU is potted with something resembling JB weld, meaning, it is NOT repairable in any way shape or form

If you are a do-it-yourselfer and can solder, consider Megasquirt.

What is your budget? You looking towards TBI or multiport? What engine is it going on?

Another possibility is the "used" market, if you are careful. I got "in" with a Holley Commander 950, and later upgraded the ECU to the Holley HP series and harness. This saved some money. I could have just continued to run the Commander ECU, but it's not "self learning" and it's difficult for me to tune it by myself. There are no Dyno's around here close, and "they cost money."