OK, I talked to two different distributors. The system does have incredible effects on mpg. The testimonial that everyone may have found on the website has actually been improved from 34 mpg to 37 mpg, and that 37 was before the new super gens came out, so there is a chance that this guy (with a CTD) is going to get right around 40 mpg, reason being is that the new generators are producing more hydrogen then the older gens.
The bad news is that all of the hydrogen systems have trouble introducing the gas in a pressurized system. They have created venturis that can take in the gas up to about 12 psi of boost, but above that and the system does not take in the gas. They are doing some R&D to see if they can get a venturi setup to allow around 18 psi of boost.
This does create a problem, but only for performance. For efficiency I don't think that there will be a problem as most engines are not running more then 12 psi of boost just driving down the road.
My thought is that if there is a problem with injecting the hydrogen when the system is pressurized, then at that point, when it reaches higher pressure, have a system that introduces the gas before the turbo. Only for when it was at high boost, that way you could see the performance benefit of the gas at higher pressures.
Just some thoughts, but I am going to get one for our Kenworth, I am just going to wait to see what they are doing with the setups.
__________________
2001 Cummins with AEM Intake, BD pusher pump, Edge J/A and Smarty stacked, FBD VP44, Jake Brake, HTT hx35/40 hybrid, Coaltrain 5 in. Exhaust, Coaltrain 100 hp sticks, RevTec leveler, Nitto's, Valair 500hp Clutch, Bully Dog Fluid Damper, Firestone Air Ride...