i just put a vafc in my 93 integra with a b16a is the vtm wire needed or does it need too be plugged in

 

Your instructions shoudl say. Most Hondas do NOT use the VTM wire.
http://www.bseries.net/html/garage/vafc.php
we wrote this and the VTM wire was specifically stated to not be used for the Civic SI. THis isn't to say it isn't used for the 2G but is not likely.

Trey