Hi, i'm building a '92 civic with a t3/t4 turbo, a je pistons, well many dirty stuff that really turn me on

, and i'm buying a SAFC-II to control the ecu..... i allready use it in other projects and works great but the guy of the parts shop said that i'm loosing a lot of money with that

, cause i can use a FMU from the people of vortech and thats it, so is it true or just a seller bullsh.... ? or maybe it works but i will need to change other stuff?