A performance engine designed to combine fuel efficiency and power. V-TEC stands for Variable Valve Timing and Electronic Lift Control. Designed by Honda, it was the first engine to incorporate these features. Under 5k rpm it operates like a normal Honda engine. Over 5k rpm the computer varies the valve timing and the camshaft height to keep the engine at peak power. If driven hard it guzzles gas like any other performance engine. If driven like a grandma it boasts the usual excellent Honda fuel efficiency. It was simply designed to provide power on demand. Anyone who puts this into their car is wasting money since the modifications necessary to turn any Honda into a V-TEC are cheaper than the engine swap.
Honda kicks ass, no one else did a vvt engine for like five years.