[GalaxyGreySi]

On a wet nitrious setup, the gasoline and nitrous are injected through the SAME EXACT NOZZLE as they enter the intake BEFORE the throttle body. A dry nitrous setup simply raises fuel pressure though your EXISTING injectors, and injects only nitrous through a nozzle before your throttle body. A DIRECT PORT setup injects nitrous AND fuel into each individual intake runner. Dry is OK, wet is MUCH better, and direct port = teh sex. There's the breakdown.