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Nitrous Oxide Dry Injection Kits

Nitrous oxide dry injection kits spray nitrous oxide into the intake Manifold and it is mixed with fuel and air at the injectors. Dry shots of nitrous oxide usually provide less of a power increase because there is no way of providing additional fuel to balance the extra oxygen in the combustion mixture. So you have to be a little conservative as too lean of an air-fuel mixture will cause the engine to just blow up. At least with stock factory injectors anyway.

Nitrous Oxide Wet Injection Kits

The other type of nitrous oxide injection is wet nitrous oxide injection. Wet nitrous oxide shots have fuel in them. This explains the usage of the word wet. The nitrous oxide is mixed together with fuel and a fogger injects this mixture directly into the throttle body. This provides the extra fuel to balance out the extra oxygen provided by the nitrous oxide, thus keeping the air-fuel mixture stoichiometric or not too lean. However wet nitrous injection kits might cause puddles of fuel to be stuck in the intake manifold, and cause severe backfire conditions.

There is also a hardcore form of wet nitrous shots called direct-port injection. In this system, each cylinder gets its own nitrous injector. For this modification, the whole intake manifold has to be removed and fitted with a custom one.

Is Nitrous Oxide Safe?

With the increased power being created, how does one control the process so that no engine blown cases will happen? Using wet nitrous shot kits is one way, as it mixes the additional fuel necessary to keep the air-fuel mixture balanced. Ignition controllers are also sometimes installed to retard the spark timing when nitrous oxide is being used, to prevent premature detonation, also known as knocking or pinging. Higher octane fuel should also be used.

Balancing the air-fuel mixture with the extra oxygen provided by nitrous oxide is also a tricky thing. Too lean and you’ll get detonation problems which will damage the engine. Too rich and you’ll lose power. But it’s all fun, tuning your car to the maximum performance. Good learning process.