Originally Posted by phillyfordyce
like i said, i am new and there is a few references to using the vtec 3 or 4 times per day.
what does that mean
VTEC is the name of honda's older variable valve timing and electronic lift control system.
VTEC engages at a certain rpm and changes to a higher-rev cam profile for the valves.
this ensures that the engine is still economical in the low end but in the top end is still powerful.
generally speaking a car consumes less gas while in the first cam profile so it is better to leave it below the engaging rpm to save gas.