ok i put a jdm b18c into the my 99 civic ex, when i take off i kinda hear my vtec kick in but it doesn't sound or feel like it should. Is this right or do i have a problem? Oh and i have been told on jdm engines you dont need the vtec oil pressure switch in order for the vtec to work. Is this true? cause i tested my switch and it has no 12v going to it ....even at the ecu. which is also a jdm p72.