OK Guys - get ready for a real hoot!!! I just finished reading the original 1930 service manual on my 1930 Chevy 6 cylinder coupe. Guess what??? THEY HAVE THE SAME TURBINE GIZMO ON THE AIR INTAKE ON THIS CAR!!! The car has an updraft carburetor on it - and the air cleaner is about 4" round with the vanes built into it! Did it work?? Who knows - but I bet I know where these "New Technology" guys got the idea from- searching through old patents that have expired!!