i bought a crx si, with a b18a ls/vtec. its also boosted so i cant hear if vtec is kickin in. theres a vtec pressure sensor and its hard wired into it appears to be the sensor itself. i think it works tho, becuase i unplugged it, it threw a check engine light, and redlined at seven somethin. with it plugged in, itll pull to eight. i mean id assume that its working but i think it might be like manually plugged in. im tryin to figure out what ive got here before i start going to obd1.