I just recently put a d15b vtec head on my motor and there was no oil pressure switch on the noid there was jus a block off bolt i got a switch and im gonna run a p28 will it make a diff with it that without.. im on a vafc rite now with jus vtec hooked up i jus dont want to hurt the head without extra oil pressure... the noid came off a vtec e motor is that y there was no oil pressure switch..