Nitrous Oxide is contained in the “Bottle”,which is usually constructed of thick-walled aluminum. The gas is dispersed by opening the valve on top of the bottle and then directed by some sort of tube or hose into the intake manifold. It is much denser than air thus resulting in higher compression when the piston reaches top dead center. It is actually a non-flammable gas. It is also used in the dentists office to put a patient to sleep. Commonly referred to as " Laughing Gas ". So it IS pointed in the correct position. JoJo Da Bulldog knows !!
Mastroianni and Hart