What does everything think about the gas/h20 mix for big fuel efficiency..?

[johndjmix1]

Just got back from RAMP Hummer today, got a new battery and clearance light under warantee.

While talking to the service Manager, he told me about a guy they deal with that has put on one of these hydrogen/gas units and it averaging around 27MPG. He said this was confirmed by others that have drive the H2 and by the avg fuel econ display.

Would the display show such an increase? How does the display get a readout? I was thinking from a VAC sensor? Does it actually look at the injector pulses and figure it out from that?

I have to plug the dealer real quick, as their serivce is simply awesome. I didnt even buy the truck from them, but still they are always ready to help. I just show up and they do the work right there, on the spot, and seem to have almost everything in stock. Never have I had an issue, had to argue a point, or to prove anything to them. Even If i have to pay a bit more, I will buy my next truck from them. This is really what helps the brand, dealers like this.

--John