What ECU are you using? I'm working on adding a vtec output (RPM activated) to OBD0 PM6 ECUs for people with Z6/Y8, etc., swaps. I should have it nailed down within a few weeks. The code is getting there, and I'm working hard on the hardware mods to the ECU.. But use your RPM activated switch in the meantime. And watch out for the nasty lean condition when the cams switch and you're using a non-vtec ECU..