YEARS BETWEEN 1974 AND THE MID 1990S BY LAMBORGHINI , FERRARI , MERCEDES-BENZ , VOLKSWAGEN , FORD , PORSCHE , AUDI , SAAB , AND VOLVO . THERE WAS ALSO A VARIANT OF THE SYSTEM CALLED KE-JETRONIC WITH ELECTRONIC TRIM, ABLE TO USE A CATALYTIC CONVERTER. CENTRAL PORT INJECTION (CPI) GENERAL