[Fat Charlie]

A carb helps control cumbustion. It can't help the drivetrain, aero, weight, hills or technique. There's no such thing as a 200 mpg carb because the concept itself is faulty. A "super efficient" carb I'll believe, but one with a specific mileage claim is a fake because it credits all the great mileage to one part of the combustion process and not to the rest of the picture.

I'll believe a lot of things. I even believe that there's a new, highly efficient carb design out there, but I can't bring myself to believe that swapping out one bit of hardware will radically increase mpgs.