As you have a Motec you're best off using a Motec dealer/tuner -
http://www.motec.com.au/dealers/dealersau/
MoTeC Queensland
Paul Masterson
29 Hayward Street
Stafford, 4053
Phone: (07) 3352 5155
Fax: (07) 3356 9725
Email: info@motecqld.com.au
Speciality: ECU and Data Systems
Road and race, V8 Supercars, drag racing
Track support available
ADL & ECU Dealer
I used to go to these guys years ago before thay did Motec only tuning & they are very good.