I am assuming yes but not sure. My bottle is out of the car and I flipped my switch today to see if it would still turn on and nothing. Sounds like I might have a loose connection.

 

the noids will still open if you supply them with current

 

Keep in mind, all the conditions need to be met for it to fire.

Car w/i the window switch RPM's
WOT
System Armed

With the plate, no bottle it should bog down when it activates because your getting the fuel and no nitrous. Keep in mind the nitrous noid uses the nitrous for cooling so do not activate the nitrous noid for long periods else risk damage to the coil.