Hello,

A bit of digging has turned up no definitions for the 4Z7907551AA box, does anybody have a definition file or can tell me if another, better defined, version is safe to flash to this ecu? I apologize for my incompetence as I have only started down this rabbit hole and due to a lack of programming experience, I would just like to learn from someone who knows what they are doing. If disassembly is my only path from here then I guess I better learn such processes and some German. I am just looking for basic emissions tunability (rear o2, sai, cat delete) for now and will need to do a lot more reading before comfortably developing a tune.


Thanks in advance