Firstly,

the whole idea of using the gotech mfi ecu is the ease of installation, its a quick and easy way of converting a mechanical injection system to electronic without machining bottom pullies etc!

you can buy a gotech mfi ecu and loom for £361.24

As for people not being able to map it, im not sure why they cant, we have the ability to map alot of systems, and so long as we can get the software and a data cable we will map anything.