If you go through the lists of tables you can change you will notice there are shit load! Select the items recommend for general health and take a data log to study, it doesn't have to be for a reason other than learning! Look at your log, say you want to check your afr and you think it's excessively rich and a knock signal is present, go through your afr tables you might notice that you have hit the desired afr for a knock signal detected which explains your rich afr. You may just be worried that the big puff of black smoke on wot, monitor your absolute load also, after another look in the tables you find that you have exceeded the load for that cell and and your current afr is the same as what's in your over load afr tables.
Thats just a start on knowing what's going on and why. Log what ever you like and just look through your tables to see what makes sense lol
Every man should have a V8 ute.....with a Chev badge.....and a Southern Cross sticker! Mods? What mods?