That should scale up to some degree! need bigger engines or more cylinders!
They are a little late on this one. Years ago, when Bill Elliot was terrorizing the NASCAR circuit, part of his advantage involved swirl technology involving parts of the entire inlet system. NASCAR eventually outlawed much of the technology from being used, due to the expense of the R&D required by the other teams to catch up.
Elliot (and the other FORD teams that were privey to the idea) was getting more power and significantly greater fuel mileage than his competitors. IIRC his relative, Ernie Elliot was the guy resonsible for this discovery, at least as it related to gasoline engines.