TO USE NITROUS OXIDE SYSTEMS IN JERSEY YOU MUST CARRY A STATE ISSUED PERMIT HERE IS HOW YOU GET IT, FAST.
http://www.state.nj.us/health/forms/f-17.pdf .This will bring you to a printable page, which is the application to obtain this permit. Print it out,fill it out, OVERNIGHT
the completed form, $25 by Money order or certified check and a photo copy of your Drivers License to:
New Jersey department of Health
PO Box 369
Trenton NJ 08625
Call them at (609)826-4935 and tell them your name and what you're looking for and they
will fax you a copy of the permit once your info arrives to them
You can do this cheaper by just waiting for it
to arrive to there and back to you but from visiting drag racing websites it appears this can take longer than a month to
accomplish, so if you want to run nitrous and need a permit QUICKLY this is the way to go.