Godiag GT100 ECU breakout box, OBD2-BD25 cable, Jumper cable, BMW FEM BDC Test Platform, BMW CAS4 & CAS4+ Test Platform, what are their relationship? what they can do? Generally speaking, they will make your diagnosis and programming work smarter, more intuitive, and save time and effort.   In general:   1  Godiag GT100 ECU breakout box   By connecting to a professional diagnostic / programming tool, it is able to supply power to it, and it is able to tell if the ECU module has a good communication with device because the indicator will flash.   Guide: Godiag GT100 Videos Godiag GT100 reviews   No. 2  GODIAG DB25 Cable Godiag OBD2-DB25 cable works together with Colorful Jumper Cable DB25 It is a dedicated connection line for single ECU module or multiple ECU modules, can work together with the professional diagnostic / programming device to perform ECU diagnosis, ECU programming, power adjustment and ECU module maintenance etc.   The cl...