G'day all, 15 pages into this thread and learnt alot of useful stuff but getting side tracked and figured I should just ask.

Wondering if anyone has some useful links to read and learn about ECU tuning, the what's-the why's-the how too's and dont do that you idiot you'll fuck it!
Im from a 2 stroke world recently converted to 4's and updated trickery so Im trying to find info on it all before asking stupid questions.
Currently Im getting to know Race Dynamics Power Tronic Piggyback ECU and their R Tune software for the 390 but being a first time gazer its left me asking more questions than getting answers.
Thanks for any links or book suggestions that are passed on.