I think I've kind of worked some of it out this afternoon.
I was a bit confused about the different stages and maps and how they work but I just installed the 7-29 autotune maps this afternoon after finally hooking it up to my computer for the first time. Fed a USB cable through the firewall and into the glove box too.
One thing I'm a little confused with still are the aggressive maps. Maybe I'll give them a go a bit later.