If anybody can educate me on NOS or point me where the find out how the use it..
I never used it but the new car I bought has it hooked up and I want to try it.

The car is 65 Coronet 383, steel ported heads. Don't know the compression ratio, 727 w/ 10" converter, 4.10 posi. 29x9 hoosiers. The bottle is in the trunk and I took it out and weighted it. It weighs 20lbs. and there is gas in it. The dash gages also has a fuel pressure gage. the shifter has a nos button it, but I have not pressurized the system or tried it yet. I don't know how old the plugs are, The pis of the plug is after 6 runs I did on gas. The car ran 13.17 @ 103 last week in 90 degree heat.
I don't know what jets are in the holley. The plugs look very clean almost lean?
When should I hit the button? and do I hold it for the full run?
Let me know what I should do and any advise is much needed.
I would like to run the car tomorrow and maybe try the nos, if I can make it work.
Any help or advise is much appreciated!
Thanks!
Don