Nitrous Express ELECTRONIC FUEL INJECTED SINGLE NOZZLE NITROUS SYSTEMS - Manual (Page 7)

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methanol applicaiotns, smaller gap may be required. Do not use platinum tip, extended tip or any
plug with multiple ground straps or split ground straps. When in doubt about heat range always go
one step colder. A spark plug that is to “Hot” will cause detonation, burned plugs, poor performance,
and engine damage. In competition engines always use the coldest plug available. Never use an
extended tip plug in a racing engine.
4. The NX nitrous system is so advanced, (technology, engineering, and workmanship) that huge amounts
of timing retard is not required. You may run as much timing as you normally would, if you have the
octane required to prevent detonation. We recommend 1 degree timing retard for each 50 horsepower
boost as a starting point. Your engine may need more or less depending on your combination.
5. Your fuel system is also an integral part of the nitrous system, be sure it is in top shape and all filters
are clean.
6. Engine operating temperature should be between 160 and 200 degrees prior to nitrous usage.
7. Never “lug” your engine and hit the nitrous system, use the system at wide-open throttle only, nitrous
should not be used below 3000 rpm’s. If you do any of the above a serious “Back Fire” could result in
engine damage.
8. The better the exhaust system the better the nitrous system will work.
9. Do not attempt to drill or alter the jets, solenoids, or the tubes in the nitrous plate. These items are
engineered to their maximum capability. Any modification you can make will decrease power and
destroy engine parts.
10. Do not mix or attempt to match any other brand solenoids with this system. Do not attempt to mix or
match any other brand plate or nozzle with this system. Do not attempt to use any other brand kit as a
second stage with this system. Our nitrous technology is far superior to any of our competitors. Any
attempt at this could lead to serious engine damage.
11. All of our systems are designed to operate at 1050 PSI bottle pressure. This is extremely important
and cannot be stressed enough. If your bottle pressure is below 1050 PSI the system will run rich and
will not produce the advertised horsepower. If the bottle pressure is above 1050 PSI the system will
run lean, possibly damaging engine parts. This pressure is easily monitored by using a NX liquid
filled pressure gauge (PN 15509). Note: When the ambient temperature is below 97 degrees a bottle
warmer is required (PN 15940 or 15941). An NX bottle jacket (PN15945 or 15946) will help stabilize
bottle pressure in the winter and summer.
CAUTION: NEVER USE AN OPEN FLAME TO HEAT A NITROUS BOTTLE. THIS IS A VERY
DANGEROUS AND POTENTIALLY FATAL PRACTICE!!!!!!!!!!!
12. A purge valve (PN15600-15601) is recommended on all NX systems. When the weather begins to get
hot a purge valve is worth up to a tenth of a second on a 1⁄4 mile pass. Note: The correct purging
procedure for drag racing is: 1. Complete the burnout. 2. Light the pre-stage bulb. 3. Push the purge
button three times, one second each. 4. Stage immediately, GO FAST.
13. If there is a question about the purity of your nitrous supply, a filter (PN15610 or 15607) should be
used when refilling your bottle. Just attach the filter to your bottle when you take it to be refilled.
Contaminated nitrous will cause serious damage to the nitrous solenoids and possibly to your engine.
This is a lifetime renewable filter.
14. If you have questions about the suitability of your torque converter or gear ratios, call the factory tech
line for the inside scoop.
15. Your nitrous bottle should be turned off when not in use (even between runs). An NX remote bottle
opener (PN 11107) will make this task much easier.
16. Start with the lowest power setting in your system. Don’t try to be the track “Hero” on your first pass.
Remember start out small and work your way up, NX systems produce more real horsepower than
any other brand on the market today.
17. If the solenoids must be disassembled for cleaning or rebuilding always use the proper wrench (PN
15921). Do not use any clamping devise on the solenoid tower, instant non-warranty, damage will
result.
18. If you run an NX system of 150+ horsepower you must use a high octane racing type fuel. These are
some tips to help you choose and maintain the correct fuel for your application: