I suspect there are only 4 or 5 people in the WORLD that are doing remaps for these cars. And maybe a dozen companies that sell the resulting maps.

If one of those was in melbourne, I'd be shocked.

Now, you can probably find a shop that will install a program/file/chip that was developed and written somewhere else.

Better yet, research the different options, choose one, and ask them where you can get it done in Australia...

A