FiTech EFI system

So have you guys running the FItech seen any improvements in economy? I'm curious as to what they do to mpgs!
I put the fitech on my 87 Ramcharger daily driver with a 360. While I do have more power I have worse fuel economy. Went from 13 mpg. to 11 now. Sorry but I am very disappointed with this setup. I went from a rock solid reliable truck to a pos that I am afraid to go out of my driveway with. I bought the fuel comand with it also..
When I first got it the hand held was fucked up, sent it back to fitech . Cost me 60 Can. in shipping. Got it back and worked fine for a few weeks. On Feb 27 got a call to go to my grandsons birth, 350 mile drive. Got 50 miles into my ride and it started ******* up, would keep stalling as I was cruising down the road, pull over wait a few minuites and fire up and go a few miles and stall again. Did this for 300 miles and I missed my grandsons birth. Borrowed a carb from my bro and came back home with it. Put fitech back on and phoned up fitech and they could not figure it out so I had to send it back,100 Can. to ship it back. They tried to fix it but must have sent me a different one back as it was not the one I sent them. When they sent it back they did not mark it a replacemennt part and I had to pay another 300 for duty to get it back. Have had it back on my truck for a few months now and have not been able to get good warm engine start and idle since. To top it off I had a dentist app. on Tuesday get half way there and the ******* thing died again. Towed the pos home and will be looking for a carb again. I have over 2500 into this thing now with new fuel lines and pumps and all the other **** and it sits broken down again. To me fitech means never buy fuel injection again.
Mike