As stated above, what was the range of this Byzantine superweapon and could it be modified to increase its range? If so, how would the Byzantines have done it?
As a projector:
The full-scale device built on this basis established the effectiveness of the mechanism's design, even with the simple materials and techniques available to the Byzantines. The experiment used crude oil mixed with wood resins, and achieved a flame temperature of over 1,000 °C (1,830 °F) and an effective range of up to 15 meters (49 ft).
In its earliest form, Greek fire was hurled onto enemy forces by firing a burning cloth-wrapped ball, perhaps containing a flask, using a form of light catapult, most probably a seaborne variant of the Roman light catapult or onager. These were capable of hurling light loads, around 6 to 9 kg (13 to 20 lb), a distance of 350–450 m (380–490 yd).