The air-fuel ratio of engine is controlled with closed loop; therefore the exhaust gas emission is cleaner;

It has idle speed control function, so the idle working condition is more stable;

It can dynamically control the engine's spark advance angle and dwell angle, so the mixed gas burns more completely;

It can cut off the fuel when coasting with gear, therefore is more economic in fuel cost;

It has air conditioning system control function;

It has self learning function;

It has fault self-diagnosis and limp home function.