Now that you mention it I think I read that somewhere too lol. Thanks Marko!P2R! I can't explain why by myself and i don't remember where i read that (Probably in 1 of my hundreds of car mag. or books!) but you want a steady smooth suply of air in the engine, not a turbulent one...! The needed turbulences will be made by the piston squishing the quench pads on the cylinder head!