The Superb VTEC This time, I'll talk about VTEC. VTEC stand for Variable Valve Timing Engine Control is invented by Honda Motor Corporation to improve volumetric efficiency in a petrol engine. It was invented by Ikuo Kajitani, Honda engineer and the first system of its kind. This system uses two camshaft profiles and electronically selects between the profile. This system is invented to boost more power without using force inductions such as turbocharger and supercharger and also the use of unconventional engine design such as the rotary engine. As a result, the engine just have to change its cam timing profile in order to get more power. The timing for the opening and closing of the intake valves varies as well as the valves lift according to RPM range. These are controlled by the ECU ( Electronic Control Unit). Besides, Honda is also concerned about the fuel efficiency by changing a little bit on the system. Then i-VTEC is invented, i stands for intelligent. By doing this, consumers will experience an enjoyable driving moment as well as good fuel efficiency.