Hello Sara, hope everything is well, hello everybody,

No Sara we have not made any technological breakthrough so far.
As Rob said, the only fuel consumption figure ever stated by me is that I'm able to fly my Flea converted Rapier for 9 minutes on a 20 oz. fuel tank on a "normal" flight. What is "normal" flight ? well, it is difficult to say, not all the time at full throttle but not all the time at half throttle. This information is useful for people trying to decide which airframe with which fuel tank, and only for that, it is not intended to be for your efficiency contest.

The estimated full throttle fuel consumption, and I want to underline ESTIMATED, is going to be around 3.4 - 3.5 oz. per minute. Final number will be given only when the engines are ready for production because we are still running tests and fine tuning. Hope this helps

Best regards
Felipe