converting 340 to EFI is Edlebrock the best solution?

I can't seem to find the info I need on the Holley Dominator. Do you have any actual directions on this system. On the Holley can you get into the maps or just the injectors? Thanks. ps I don't know much about all this.
Holley EFI 554-114 Dominator EFI ECU

At the bottom of the page you’ll find a few links Holley provides that should help get you started. The dominator ecu is completely tunable, there is almost nothing it won’t do.