Ben's pulse jet kart September 2012 run
This run was exactly 3 minutes long and the engine used exactly 3 pounds of propane. This is my smaller of the 2 engines I've built. The energy released was 1,290,000 BTU/hr
377,000 Watts or
506 Horsepower
Obviously most of the output is in the form of heat. Enough to heat 20 average size homes at one time.