Well let's go over a few things... Normal performance modifications enhance displacement, crankshaft torque (or both) or volumetric efficiency. Pipes, porting, head mods, big bore kits, stroker cranks.... all do the same thing to varying degrees.
Nitrous oxide is a little different in respect that it's only "on" part time. It is an extreme oxidizer stored as a liquid under a usable pressure that vaporizes into a gas at a usable pressure. The oxygen in the gas is relatively unstable and the nitrogen acts as a "buffer" to the flame front getting TOO hot and burning up pistons or crankshafts TOO fast....
Generally the tanks are plumbed so that the tank outgasses and feeds, under relatively high pressure, a solenoid. A manual valve can also work well but is not as quickly "throttleable".
The trouble with nitrous oxide is matching oxidizer flow and fuel demand..... With modifications which are "on" all the time, it's relatively easy.... you jet the carburetor according to the needs of the engine to compensate. Generally aftermarket pipes and removing the airbox require a subsequent main jet increase of about 50-70 numbers (230 to 280-300).
Blaster's don't come with a fuel pump from the factory. They rely on a gravity only system. That system doesn't work well to create enough pressure to mix fuel with the nitrous oxide output.