Most of the plug-in ecus and the wire in g4+ appear to have the RS232 Serial TX/RX on them, so they should work. I've connected via serial to a few different model plug ins and a G4+ Xtreme and Storm wire-in. You would need to wire up a serial connection or get the serial CAN-SER cable though. I've never needed to repin anything with these cables to have it connect to either a direct serial port or a USB to serial adapter. If you wire individual pins you would need at a minimum the TX, RX, and GND for serial communication. On the DB9 pin connector the pins would be RX pin2,TX pin3, and GND pin5.
Personally I think Adam and the team does a wonderful job of helping people get their shittas running.
In fact I've seen a number of times Adam (sorry to single you out) has gone above and beyond to help.
You have to remember that these guys (non gender version) make and support the ECU. Getting the engine and systems working with the ECU comes down to who is putting in the numbers into the ECU. It's not on Link to get it running and tuned for you.
Some people keep bring up this whole thing about them feel abandoned on G4+. It's EOL, new version now with better features and faster CPU. It would be like complaining to *insert brand* management that a 10 year old laptop can't do Machine Learning or run multiple VMs. I was a little bit on the same thought when the G4X was released. But then you look at the features of the G4X and realise it's better in so many ways. Nothing wrong with the G4+, the X is just more.
I'm sorry you have had such a hard time with it. I spent 10 years in L1, L2 and L3 support before consulting for a multinational enterprise computer company, support is hard when you don't have the whole picture. You feel guilty about asking for more information, but what people don't understand is the more info you get, the better idea that support person has of fixing the issue first time for you.
