I have said it a thousand times. The reflash scene for diesels is hopeless in Australia.
None of the parent companies want dealers to have master reflash software to make their own tunes because it means they wont be selling the partent company premade tunes and thus they will loose out on profit.
Reflashing in itself is a drawback, not being able to tune the car live under load instantly gimps it in comparison to any chip that has live tuning ability like unichip.
Do you really think it matters if we tell the ecu to turn the fuel up via reflashing, or manipulate the ecu into wanting to turn the fuel up on its own via a chip?
The result is the same. Not just similar, identical.
Yes you can adjust more paramaters with a reflash! Like how the engine starts when its cold, what rpm it idles at with the air con on, how much more or less boost it runs based on altitude or temperature... 95% of these things are perfect from the factory and require no adjustment anyway, so why bother listing them as being better because they 'could' adjust them.
Petrol engines are in their own world. With different types of injectors, throttle bodies, turbo systems, exhausts and a myriad of other variable that demand all of the finer details be completely reworked to suit that particular combo.
The truth of the matter is that even alot of the basic chips out there are doing a better job than the generic remaps being sent over from europe and loaded into aussie spec vehicles.
Specifically tuned vehicles with unichip will get better results guaranteed than these generic tunes.