Mate do a search for East Coast Performance Tuning (ECPT). Harley there is the guru of tuning the patrol DI ecu. You can post it to him if your not close to him.
I have heard he is restructuring his business at present so his business name may have changed.
Alternatively you could try Pat at Powercurve performance (Nambour) who has been working with Harley a bit to tune these also.
I understand Ecu tuning is considerable cheaper than a unichip, and certainly much better than any if the generic chips for this vehicle.
Hope that helps