Hi R1NGA

The M3W has a S&S ECU unit ( Variable Fuel Injection ) and the Protune software is available on their website for download.
There is a comprehensive manual too

The VFI unit has a standard cell phone "d" shaped socket ( sorry cant recall the proper name but it is obvious when you see it)

I used my cell phone cable which connects to the PC

The VFI unit is underneath the fuses and the socket is protected by a plate with two very small (easily lost!)screws