Buy the Techstream cable from eBay, it’s called Techstream mini vci or something like that. I have the 1.4 firmware cable, I read that the 2.0.4 one is better for some reason but mine works ok. Price is around $30 for the 1.4 and $100 for the 2.0.4
It comes with the software but if you can’t get it working send me a message and I can help you out.
If you’re on Facebook join 1kd forever crew, 1kd injectors only and what ever other pages are linked to those, a wealth of information from the 1kd guru. On the injector page you can upload a screenshot of your Techstream data and Anthony will diagnose it for you. Great bloke.
As far as additives, I would only run straight diesel unless you have an issue.
You’ve got a good low km ute, change the fuel filter every service, buy one of these https://rover.ebay.com/rover/0/0/0?mpre ... 3198851914
So you can check the oil pickup screen for blockages through the drain plug when changing the oil.
When fitting your snorkel use wiss snips to cut the big hole, heaps easier than a hole saw.’