What's so good about the G4X range of ECU's. Mike Stuart December 17, 2020 00:12 Updated Released at the end of 2019, G4X is our latest platform. Its the one will update and add features to moving forwards, and its pretty awesome! Read the specifications here. Related articles How do I know which ECU is right for my car? I need an unlock code. What is the difference between the Street and Race Dashes? Anatomy of a Plugin ECU Why should I buy a Link ECU? Comments 0 comments Article is closed for comments.