i think when u free rev it.. it wont hit vtec due to speed lack of speed...
and mayb oil pressure isnt enough.
but i believe vtec will only operate under certain circumstances
speed sensor (showing speed that car is moving)
thats what i think is the reason anyways.. correct me if im wrong.
lol.. yea i know... if your having problems with vtec.. change your oil pressure switch with a new one or a known working one (its the green plug on the vtec solinoid)yea were talking factory here....