Nitrous not "hitting," where to start looking

I have had My NX kit on the car for about 2 months now. It consists of:
NX kit with shark nozzle
MSD 6AL
window switch
WOT switch
NGK TR6 plugs.
NX bottle heater
I had a local shop who is very experienced with N20 installs do it. When they did it, even after they finished and we drove it, it didn't seem to "hit" as hard as I thought it would and neither did he. He sprays 300 on his car so 100 wasn't much to him. Since I got a new program via Bryan for the nitrous. The car was down for a month with a bad tranny. Its been fixed, and I got the bottle filled yesterday.
Last night:
I kept the bottle warmed for awhile and pressure was up to around 950 or so. I tried to use it a few times and nothing each time.:o Its a shame, the guys who did the install no more about the car than I do but I would like to find out whats going on. Where do I start looking first?

Do you even know that nitrous is spraying? Try it with the nozzle held out in the air, and running the motor over the lower window switch RPM point, and click the WOT switch. Does it spray?

Dave

What a great shop... switch the connections on your WOT switch around.

Originally posted by LPEdave
Do you even know that nitrous is spraying? Try it with the nozzle held out in the air, and running the motor over the lower window switch RPM point, and click the WOT switch. Does it spray?

I agree this would be the easy way on finding if it is sparying. Could be a bad ground / or the switch on the wot switch.

Vinny

Originally posted by '94 Bad A Z28
What a great shop... switch the connections on your WOT switch around.
If that were the case (connections backwards) wouldn't that not allow the nitrouse not to spray at all like it did when first installed?

Get a fuel pressure guage on the fuel system and watch it at WOT, and at WOT with the nitrous system engaged. Maybe there is a serious pressure drop because the fuel pump isn't keeping up or just because the nitrous kit is pulling fuel from the injector rail and not it's own supply. Just a thought, goodluck!

Do you feel it hitting at all? Don't let your mind play tricks on you. Is the line clear? Are you using a wet kit and if so is your fuel kicking in? Did they remove the schradder valve if you do have a wet kit? Are both solenoids opening up? Is the msd switch tapped into the right wire? Is the fpss wired correctly? There is a lot to look at. First remove the nozzle like the others say to make sure it's spraying. Test the fuel and nitrous. Fuel only if you have the wet kit...u know what i'm talking about if you have that setup. Shops sometimes overlook things. I know this first hand....seen this first a millions times. Find someone on a local board that has a similar setup and go from there. They maybe able to test your system for you easily.

check the jetting too make sure its right. heat the bottle to bout 1050:p

Originally posted by 95 Mystic TA
If that were the case (connections backwards) wouldn't that not allow the nitrouse not to spray at all like it did when first installed?


My bad... didn't see that... I thought it just wasn't spraying. :D