jcarter,
I didn't try it out as Jason tried it out himself.
As you said, maybe it's due to the 2.5 ECU which is different from the 3.0 litre that you use in OZ.
We don't get petrol versions Hilux over here. We only have one version, the underpowered 2KD-FTV 2.5 D4D!
cry.....cry.....
Cheers