I installed the EZEFI (original version) on my car about 3 years ago. Plan out where you want everything to go before you actually start installing it (e.g.--location of ECU, wire routing, etc.) I didn't do to well at this and ended up having an extra hole in my firewall. It was also recommended to me to run a dedicated switched power line from the ECU to the battery. Do not hook the wire into switched power in the fuse box. It will have too much electrical interference and will not run right. I ran my switched power line with a toggle switch. Not sure what kind of fuel line they are supplying with the kit now. The original line they sent was a mother to get on the supplied fittings. I went and ordered different fuel line/fittings from Summit. Much easier to assemble. I went with an in-tank fuel pump instead of the external pump. Much quieter, but more expensive. It has worked out well for me. I think you will like it.
Use a relay wired directly from the battery thru the relay to the pink wire going to the EFI. Control the relay with switched ignition power. The EFI will keep going into fault mode if the pink wire has any interruption in steady power or low voltage.