find someone that has a dyno that they can adjust the load... you need a dyno to really dial in a EFI system. If you have a Dyno and some experience you can tune any EFI system... they all work the same way
here is a good class on tuning to get started
http://www.efi101.com/
You can create a base map to get it running... but maximizing power and economy requires a dyno it seems
Chris