so i have a y8 head on a sohc zc block in my obd0 crx and i have a vafc hooked up. thing is i set the vtec to come in at 5500 rpm and i can hear it come in, the catch?? on the monitor screen it set it up to monitor vti which i guess is vtec engagement and rpm but rpm stays at zero and vti stays on off..what is vti?? why isnt it working?? i have all wires hooked up right. i dont think it matters but it bothers me. help