•  The PCM controls duty-cycle type solenoid valves and an ON/OFF type solenoid valve to control the EGR valve in order to obtain the optimum EGR amount for the actual engine operating condition. Due to this, emission performance and driveability has been improved.

•  When introducing the exhaust gas during low engine speed, the PCM controls the intake shutter solenoid valve (half) to control the intake shutter valve opening angle. Thus the exhaust gas is channelled into the combustion chamber efficiently. Due to this, emission performance and driveability has been improved. (WE-C)

•  As the MAF sensor deteriorates and an error margin is created between the target and the actual intake air amount, the PCM conducts learning and correction.