In 1988 the second generation of the Valencia unit was launched to meet with tightening European emissions legislation. The redesign included an all-new cylinder head with reshaped combustion chambers for and inlet ports for 'lean-burn' operation, and the Ford EDIS fully electronic ignition system, with the option of single-point fuel injection for use with a catalytic converter. The engine was renamed the Ford HCS (standing for "High Compression Swirl"), although some internal Ford service publications call it the Valencia-HCS in reference to its heritage. This engine used a much leaner fuel-to-air mix than a typical engine, at a 1:19 ratio. In addition to lowered emissions, Ford claimed that fuel economy increased by 11 to 18 percent while power was up from 5 to 8 percent, depending on the model.