Ok guys, sorry. maybe I wasn't specific enough. I have a 4G ecu (PM6) that I'm using. If i need to hook up this oil pressure switch, where do I hook it up to? what ECU pin locations? I can't find it anywhere. That link you sent me was for a different ECU. But what i'm saying is, I now have the VTEC hooked up, but the oil pressure switch isn't. The VTEC changes the sound of the motor when it kicks in, but it doesn't seem to be doing much. My question is, Do I really need to hook the oil pressure switch up? and where do I hook it up to when I hook it up?