Wet System


On wet nitrous systems, nitrous-oxide and fuel are injected through  the same nozzle. There are two solenoids: one for nitrous, one for fuel. Two lines run to the wet system nozzle, which is different than dry system nozzle, as wet system nozzles have two inlets: one for nitrous and one for the fuel (see image below)


Wet systems will make the upper intake wet with fuel. On fuel injected systems, the wet system nozzles are placed a few inches away from the throttle body. On carburated systems (plate systems), special plates used for injecting nitrous and fuel (see image below - on the left)



Wet nitous systems are best used with intakes designed for wet flow and turbo / supercharged applications.









Port System

This is, in fact, basically a `wet` system but may be considered as a different type. As its name implies, direct port nitrous system injects the nitrous and fuel directly into each intake port on an engine. You can see the difference between a wet system and a direct port system by looking at photo on the right and the one above.


On dry and wet nitrous sytems, the lean / rich conditions of each cylinder may differ from each other, which, something we won't want to happen.


Direct port nitrous systems allows fine tuning of each cylinder by metering the nitrous and fuel delivered to each cylinder individually.


Because of these reasons direct port setup typically provides the most horsepower and used for extreme race applications.






previous page | go to page4