It's an interesting design but the forced air induction make the bikes illegal to race. Although Honda have a way of getting thier own way nearly all of the time...
There's an American company Ecotrons that sell EFI fits for bikes and other small engines. They have a 2T kit which run two injectors in front of the throttle body. I look at them once a month or so and think....?
It is no more "forced air induction" than Any EFI / DFI set up out there, on most cars, trucks and bikes. There is pressurisation, through a variety of means, of any Injector unit. The main air charge comes in through the reeds, into the cases. Though, the base drawing does make me think that it may have had an 'air purge' arrangement to it. The earlier EXPs, ran with carbs, and an engine that was very much based on the architecture of early 500s. Then, as can be seen in those pictures, it became something
quite unique. The CRM250ARs, ran with a carb. And you can find them in the various bike classifieds here in OZ, pretty easily.
It's conceivable that the entire fuel / air charge could be delivered purely by the injector unit on an ICE unit, but it's almost completely impractical, and truly complicated and expensive to do so on a bike. The sort of expensive, complicated and heavy, that so many people are scared of - and, in that case they'd be right. But, it's not something we really need to 'worry' about.
DFI / Whatever Clean Tech, that companies have, is in road going 2ts future, simple as that. The date, now appears to be 2017 for us to see it, if that remains the Euro
?? standards introduction. I'd like to see it sooner, though.