nitrous is a way of putting more oxygen molecules into the combustion chamber, if you do not add any fuel, the air fuel mixture will be much too lean and you will blow your motor. more air, more fuel, more power. So obviosuly you must add more fuel when you are spraying.
Further more, nitrous also is rediculously cold and will cool your intake charge, which also aids power. Nitrous can also be very inconsistent because of varying bottle pressure, atmospheric conditions, unpurged nitrous lines, etc... Which is why a lot of people stick away from it.
You can do a dry sytem or a wet system.
Dry system
1) Nitrous is injected into the intake pipe around 6 inches away from the throttle body, and there is piggyback computer telling your engine to spit out more fuel and retard timing to compensate.
Wet system (2 different kinds)
1) Single Fogger -There is a single fogger nozzle where nitrous and fuel meet and are injected 6 inches away from the throttle body, some ignition retard would be a good idea.
2) Direct port - Similar to #1 fogger nozzles are used but instead of just spraying it before the throttle body and hoping it mixes in each cylinder equally :roll: You use one nozzle in each runner of your intake manifold and that way you are sure it is mixing equally.
You can also find direct port plate systems that fit between the head and the intake manifold.
For the cars you listed I would use the singgle fogger with no more than +/- 50 shot.
Good luck getting refills :shock:
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