Of course you're also putting 3 times the energy in so it's not necessarily improving efficiency.

well we can consider at least 1 of those three times can supply the power to generate the HHO in the vacuum created by the explosion of the 3 times of energy normaly used in a gasoline engine.

as the piston strokes out , and as the hydrogen implodes.
but mostly as the piston strokes out via the 3 times energy transfered to the fast moving heavy flywheel.

and the additional efficientcy of having only 1 stroke
vs the 4 strokes of a normal gasoline engine kind of makes it seem not so inefficient at all.

unless your just a simple common nay sayer.

a 1 gallon non pressurized HHO explosion

that should send a piston down a cylinder wouldnt you think?

3/4 inch of dust build up on the moon in 4.527 billion years,LOL and QM is fantasy science.