VERSIONS OF THE WRIGHT R-3350 USED IN THE B-29 SUPERFORTRESS . ONE OF THE FIRST COMMERCIAL GASOLINE INJECTION SYSTEMS WAS A MECHANICAL SYSTEM DEVELOPED BY BOSCH AND INTRODUCED IN 1955 ON THE MERCEDES-BENZ 300SL . IN 1957, CHEVROLET INTRODUCED A MECHANICAL FUEL INJECTION OPTION, MADE BY GENERAL MOTORS ' ROCHESTER DIVISION,