I recently finished installing my nitrous kit, here is the install thread:
http://www.focusfanatics.com/forum/showthread.php?t=235415

Everything was running good, no problems then I tried it out last night and at 3k RPMs I didn't feel the kick I normally felt. So after that, I just assumed the bottle was empty. Went to get it filled this morning and hooked everything back up, still no kick. I checked the bottle pressure and it was around ~1000 psi when the bottle was open. Arming switch was on and seemed to be running fine. Tested it again and still nothing. I checked the shark nozzle and it didn't have the cold condensation on it that it normally did after using nitrous. I'm not sure if fuel is getting dumped into the intake, but it doesn't seem like nitrous is. I don't know what to check now, but I'd like to make sure everything works soon. Help!

check the solenoids. if its not working it wont give you nitrous. it may be as simple as a loose ground, and it may be as complex as a dead solenoid.

^ about narrows it down.

If you can make the system "operate" like you would do when Driving it, Pull your nozzle out and see if it sprays nitro. Pretty much...double check EVERYTHING you did when installing your kit from top to bottom.

You can put 12 volts to a solenoid and listen for a "click" to make sure it's working.

if you can make the system "operate" like you would do when driving it, pull your nozzle out and see if it sprays nitro. Pretty much...double check everything you did when installing your kit from top to bottom.

You can put 12 volts to a solenoid and listen for a "click" to make sure it's working.

++++1

check ur solenoids.