F. A. S. T. system, has anyone used them?

I used the FAST Ez efi on my NA408 Dart. It ran unbelievable. I was really happy with it untill I had an electrical fire not related to the EZ efi. I still need to get that fixed up. But I was highly impresed with how the Ez efi worked. Very easy to install. Followed instruction to a tee. I triple checked everything, and read up all horror stories people had with it. They all seemed to be installer errors. That first start up it fired right up but it was rough running and running terribly rich out the back. I was a little concerned I had something wrong, but I need to at least let it warm up. That was a very long 20min. But man when it reach that temp setting and started tuning itself it was like a light switch went from running rough and gassy smoke coming out the tails to smoother than my carb every ran and clean clear exhaust. O my god the throttle response compared to my carb before was out of this world. It could not believe the difference. I also have a 89' turbo mustang it doesnt have the reponsiveness this thing had. I only got about 200miles on the system before the electric fire but I ran great. I did get to step on it a few times from a roll and was very impressed with the power it was making. It felt very comparable to the 340 on nitrous I had in the car before switching to the 408. I would use and recommend the Ezefi to anyone at this point. My Dart is currently up for sale because I have grown tired on the project and have a new project on hold till its gone but that has nothing to do with the performance of the car or the Fast ez efi.