Mines ECUs are just standard remaps.
The chips are EPROMs, and can be edited with normal software, but are usually glued down and therefore making it virtually impossible to remove the chip without destroying the chip and the ecus board.
They are pretty much useless for Australian cars, as pretty much all the ones we see here came from jap imports so they are tuned for jap fuel, and you often don't know what mods they have been tuned for.
you will make better power with a remap dyno tune to your car with its specific mods running Aussie fuel.