FiTech EFI system

I purchased the Go EFI 600 and Fuel center from Pace in December. Cost a small fortune in Canadian dollars. $1826. Had a friend bring it back from Indiana at Christmas so saved on shipping and duty thankfully.
I have been watching this thread since the begining as I wanted this for my 70 340 Duster, but it runs fine with a carb.
Instead I am going to use on my daily driver 87 Ramcharger with a 79 360 in it. It gets horrible gas mileage at 12.5 miles to a US gallon. I am hoping to improve on that.
For the first while I am just going to use the fuel mode and latter I will do the timing as I have a old lean burn dizzy allready to go in if I want.
I have to change out my intake manifold to a 4 barrel and than the install begins.
It will be interesting to see how it starts on these cold northern Ontario mornings, -20 c this morning.
I am not interested in more power, I need fuel mileage and if I can pick up 2 or 3 miles to a gallon it will be a success in my books.
Hope to have it up and running by the end of the weekend.
Mike