<P> It is possible to combine the use of nitrous with a gaseous fuel such as propane or compressed natural gas . This has the advantage of being a dry system and yet still maintaining proper air / fuel mixture . Such a system requires exact choice of jet sizes and gas pressure regulation to provide a consistent pressure to the jets . Other advantages include better air / fuel mixing and distribution and less risk of knocking due to the increased octane rating of propane and CNG . </P> <P> As with all modifications to increase power, the use of nitrous oxide carries with it concerns about the reliability and longevity of an engine . Due to the greatly increased cylinder pressures, the engine as a whole is placed under greater stress, especially the parts involved with the combustion chamber . An engine with components not able to cope with the increased stress imposed by the use of nitrous systems can experience major engine damage, such as cracked or destroyed pistons, connecting rods, or crankshafts . </P> <P> Even if the engine is up to the task, severe damage can occur if a problem occurs in the fuel system; an engine running with nitrous oxide depends heavily on the proper air to fuel ratio to prevent detonation from occurring . For example, if the engine's fuel supply were to be reduced, this would cause the engine to run lean by whatever degree the fuel delivery was reduced, which can lead to engine knock or detonation . Depending on the engine, this may only need to occur for a matter of seconds before major damage occurs . </P> <P> It is essential not to reach a fuel cut rev limit as this will also momentarily restrict the fuel flow to the engine and as nitrous is still being injected into the engine without the additional fuel the engine will again run lean and cause detonation . </P>

Is it legal to use nitrous oxide in your car