I JUST DID A SWAP COUPLE MONTHS AGO I HAVE A 91 HATCH S.I. WITH A PM6 ECU AND THE ONLY PROBLEM IM HAVING IS GETTING THE VTEC TO WORK I JUST WANT TO KNOW WHAT DO I NEED AND HOW TO GET THE VTEC TO WORK PLEASE HELP ME!!!! THANKX

 

check out this web site it might help http://crx.honda-perf.org/articles/z6swap/z6swap.html

 

you could put it on a rpm switch and have it turn on at so many rpms it only takes 12V. I believe you can get switches that do so from like summit racing.