had a quick thought on this. (yet to look so I'll ask.) is there a software package that can do what the original system does. IE display fuel economy, error codes etc.
doing math on a touch screen version with nav,phone,dvd,tv off the one screen (car pc.) integrated back into the OE screen mount. have some of it figured out but missing that bit. I know the data stream can be read (blitz do a multiinfo unit.) its finding software that is user friendly and not service based.
thoughts??