noob asking question when you use nitrous are you above atmospheric pressure ? or is it just a dense charge of cold air?

 

No. If you put a boost gauge in the intake it would not show boost. if it did it would just shoot up out the carb and the car would stop running. Nitrous oxide is a chemical compound of 2 nitrogen molecules bonded to 1 oxygen molecule.when injected in to an engine it goes into the cylinder and at (ithink) 572* F these molecules seperate. This allows the oxygen to burn. when the proper amount of fuel is added you get horsepower.

 

so its just caring more air into the cylinder

 

here ya go
http://www.youtube.com/watch?v=Jej4M9qoWSM

 

sweet