Neil, go read up on the Forced Induction Performance and Maintenance threads. They are pretty good though you gotta learn to filter out the rubbish advices by noobies.
In QLD, i know that guys like Strutto, Jay51, Squizz, Slip and JLnewton knows their stuffs. Also, Tze (my neighbour) is pretty knowledgeable as well.
I learn some of my stuffs from Tze and mostly by reading.
The true king in these forums would be 'sydneykid'. he's our god