Nitrous Express ELECTRONIC FUEL INJECTED SINGLE NOZZLE NITROUS SYSTEMS User Manual
Nitrous Express For the car
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ELECTRONIC FUEL INJECTED SINGLE NOZZLE NITROUS SYSTEMS
INSTALLATION INSTRUCTIONS
Congratulations on the purchase of your Nitrous Express EFI single nozzle system. Nitrous Express utilizes
only the highest quality components d e s i g n e d for the use of liquid nitrous oxide. To properly utilize these
specially designed components and obtain the trouble-free operation that this system is capable of producing, it
is extremely important that you read all instructions carefully. Pay special attention to the important notes at the
end of the installation steps and the tuning tips listed at the back of this instruction sheet.
All NX Stage 1 EFI systems are designed to operate on most vehicles with the stock fuel pump and no timing
retard up to 100hp. You should verify that the fuel pump maintains factory pressures while the nitrous system is
engaged, we also recommend running a NX fuel pressure safety switch (PN15718).
On all settings above 100
horsepower the following precautions should be observed:
A. An extra capacity aftermarket fuel pump must be used, 250LPH recommended.
B. High octane race type fuel, and/or timing retard should be used to prevent detonation.
C. Increased strength internal engine components and high performance head gaskets may be required.
D. Depending on compression and fuel quality timing retard may be necessary to prevent detonation. If you have
an aftermarket ECU tuner that advances the stock timing, detonation could be a problem. These aftermarket
tuners can
be
compatible if higher octane fuel or NX Power Booster (PN # 16003) fuel additive is used.
To insure proper system assembly and operation, carefully read the following installation procedures thoroughly
before beginning:
A. Before starting, carefully disconnect the vehicle negative battery cable. If there is any question about this
operation, consult the vehicle owner’s manual!
B. DO NOT use any sealer on flare connections, hose, or bottle connections. For other connections u
se the
furnished NX red liquid thread sealer; use no other sealing compounds or Teflon tape.
C. Excessive tightening of parts is not necessary, snug is tight enough. If it is necessary to remove a fitting
installed with the red NX sealer,
heat may need to be
applied to release the sealing agent.
NOTE: Due to shipping restrictions all NX nitrous bottles arrive empty. Before beginning the installation the N2O
bottle should be filled by a NX accredited filling station. For filling station locations log on to