Mr.Virakkavundar - has been working 37 years in Ashok Layland invented a small tool called 'Veera cyclone' which consists three irrotational fan blades are welded and fitted inside a small pipe. This tool will have to fix in between airfilter and engine. He said 'Veera cyclone' will give 1km extra mileage in city and 2Km in highways. Typically air from airfilter will goes to enigne based on the engine's suction pressure, here if you feed the air by rotationly then more air sucked by the engine so that the engine power as well as mileage will increase, he said. Some years before he invented this mechanism but now only got copyright. Courtsy: Motor Vikatan - a tamil monthly magazine for automoive.