If it's fuel, air and water together... from what I'm hearing, this would be difficult to apply in general, as the exact balance would have to be tuned to the specific car. So he's injecting compressed air to cause lean-burn, which does save gasoline, but is bad for your engine. As it is I suspect he's injecting the water to compensate for the higher heat of the "lean-burn" cycle, to eliminate knock and to keep the engine from blowing up... rust isn't a problem if it's a direct injection into the intake manifold, as the water gets burned anyway... but this system won't eliminate the noxious NOx emissions inherent in a lean-burn design.

Sounds interesting (in an academic sort of way) anyway. Good luck... hope your engine's up to the test. :lol:

If I'm right, a blind-test is still possible, as you would merely have to turn off the device for the "control" tests.