There's loads of info on here buddy, you'll need to put a LOT of time to it though.
As far as writing a file, I wouldn't do it without seeing it and logging it. I've got mine to-do then a mates in Sheffield in a few weeks first though. I'm just a hobbyist though, no plans (or time) to-do it commercially.
Thats fine mate, im not too far from sheffield, i could maybe meet up when your over,
the friend of a friend mentioned in previous threads is me ive contacted my friend and he has confirmed it lol
I dont mind putting the time in when i can and i dont expect something for nothing either mate.
I too do remapping as a hobby but its mainly dervs and vauxhalls i work with.
Hopefully talk soon
steve