VTEC system

WARNING: This page is about a different variant/trim than selected.

The VTEC system changes the cam profile to correspond to engine speed. It maximizes torque at low engine speed and output at high engine speed.
The low lift cam is used at low engine speeds, and the high lift cam is used at high engine speeds.

Fig 1: VTEC System Description
Courtesy of AMERICAN HONDA MOTOR CO., INC.