Ok a couple of things i would like explaining then Jordan. Me and my boss have been playing with hydrogen and ive even started a thread on here about it. pretty sure i called it "HYDROGEN"

1-If a plastic jar will implode, why wont a glass one? If the pressure drops too low inside any sealed container it will implode or stop drawing vaccume. It will explode when it is ignited and the flame travels back into the jar.

2-You think your replacing half your petrol with Hydrogen(NOT water) yes? Then how do you get that much gas going through a 4mm hose compared to say a 400mm carby throat while the remaining petrol is still going through the larger entry. There has got to be some sort of mixing value errors there?

3- You dont need a trip meter to do the test mentioned before. Just drive along for a little bit and do a U turn at a intersection or at a specific landmark. And try to drive in the same style.

Pics of the hilman setup would be good too!