How are you supposed to retune it if only specific dealers have the software and cable? Waste of money if you ask me.
you really need to have it tuned by someone who knows what they are doing, as with any aftermarket ecu!
A Unichip off memory has 204 points of tune on the air and fuel map and a further 204 points for ignition timing.
Basically if you want something with more ability than the unichip, you would have to look at Autronic or MoTeC and thats an expensive overkill I think that you'd agree. Microtech work well but still don't have as many load points as the Unichip.
Check out
www.airpowersystems.com.au thats who sell and authorise Unichip dealers, they have a list on their site.
I just hate seeing people wasting good money because of bad reps things get by people who dont know the fine details!