Nitrous Oxide System - NOS LS2 Injector Plate (13435NOS)NOS GM EFI Nitrous Systems are the best way to get a power increase in your fuel injected, late model performance vehicle. Nos ''Dry'' Nitrous systems get extra fuel for the boost in power from the stock injectors. The ''Wet'' nitrous systems use a direct port style nozzle to introduce nitrous and fuel into the intake runner. All NOS EFI Nitrous Systems include a 10 lb. bottle (shipped empty), nitrous solenoid, aircraft quality braided steel hose,