when it first start, there's no cel. Know sensor is good. I have a vtec controller also and it say's vtec input and output on but i don't here vtec. When i drive it to 7000 and above once, the cel pops up and it read vtec oil pressure switch. I change to a working one and check the wiring and still no vtec, and also the vtec input goes away but vtec output say's on but redline at 6500 which i have no vtec.