VTEC is a system developed by Honda to improve the volumetric efficiency of a four-stroke internal combustion engine, resulting in higher performance at high RPM, and lower fuel consumption at low RPM. The VTEC system uses two camshaft profiles and hydraulically selects between profiles. It was invented by Honda engineer Ikuo Kajitani. It is distinctly different from standard VVT systems which change only the valve timings and do not change the camshaft profile or valve lift in any way.
A Honda K24A Engine with i-VTEC
VTEC debuted in the B16A engine of the 1989 Honda Integra XSi.
Honda Motor Co., Ltd. is a Japanese public multinational conglomerate manufacturer of automobiles, motorcycles, and battery-powered equipment, headquartered in Minato, Tokyo, Japan.
Headquarters in Minato, Tokyo
Honda's foray into four-wheelers started with the Honda T360 in 1963.
Eleventh-generation Honda Accord
Eleventh-generation Honda Civic