yeah..Vtec stands for valve-tec(donno the rest)..its honda
exclusive,its something where u only use 2 valves before u reach a
certain RPM when the other two valves will be used..so altogether
there are 4 valves..
the valves open when u reach about 6-7rpm depending on vtec
models,they say this technology saves fuel,but i donno whether its
proven or not,can ask the S4 OTs
it saves fuel because you don't use 4 valves during low speed
suburban riding.
if you're gonna open your vtec all the way then of course, fuel
will burn a hole in your pocket.
when i rode my spec 3, i could get 300+ easily if i took care of
the throttle.
when i went touring then 250 is about it.