Nitrous Express DIRECT PORT (NOZZLE SYSTEM) - Manual (Page 5)

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.
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:
A. The most important statistic you should look for in the fuel specifications is the “MON” or motor octane number. In most cases the
higher the number the more timing you can run and detonation will not be a problem
B. Most V-8 or V-12 engines with stock compression will run on “93” unleaded pump gas with up to 150 horsepower boost, most 4 or 6
cylinders with stock compression can use up to 75 horsepower.
C. Racing engines with 10-1 compression or higher must run racing fuel. The higher the compression, and the higher the boost, the higher
the “MON” must be.
D. With nitrous usage usually the highest “MON” available is the one that should be used.
E. All NX systems are calibrated to use fuel with .730 specific gravity or “SG”. If you use a fuel with a lower “SG” you must use a larger
fuel jet to compensate for the lighter fuel. If you use a fuel with a higher “SG”, a smaller fuel jet will be required. Most unleaded pump
gas is .730 SG or above.
F. Racing fuel should be stored in an airtight, dark container. Exposure to atmosphere allows very important elements to evaporate,
lowering the octane of the fuel. Sunlight oxidizes the lead contained in racing fuel, since this is the most important ingredient used to
raise octane it must be protected.
G. Never leave the fuel in your car between race days. This allows evaporation of the very important “High end” hydrocarbons and lowers
the octane of the fuel.
H. Never buy racing fuel from an underground or vented storage tank. Always demand to see where and how the fuel is stored, a sealed
drum is the only correct way.
I. AV gas or aviation fuel is not compatible with nitrous usage, don’t be tempted by the cheap price, instant engine damage will result!
J. For a fuel recommendation, contact your NX dealer.
19. All vehicles, including full competition race cars, must have an alternator to provide adequate amperage required by today’s racing
accessories. Add up all the amps required by your car, you’ll be surprised!
20. If you notice some of the N2O-fuel orifices are not perfectly aligned in your NX plate system, do not be concerned. This misalignment has
been engineered into the system to direct fuel to specific cylinders.
21. If you have trouble with your NX system or any related parts, call your dealer first. If you still need help call the factory tech line 940-767-
7694 9:00 AM - 4:00 PM Mon-Fri. We are the nitrous experts and will give straight answers to your questions.
In conclusion……….
This instruction sheet and power tuning tips are valid only for a NX system. If you have a kit from another manufacturer this information will not help you!
A tune up from any other brand of nitrous kit will not work with the NX “Next Generation” technology.
DO NOT LISTEN TO:
A. YOUR BUDDY!
B. YOUR BUDDY’S FRIEND!
C. THE LOCAL NITROUS GURU!
D. ANY ARTICLE IN ANY MAGAZINE
If you follow the foregoing suggestions, your NX system will operate trouble free and provide years of thrills.
ABOVE ALL REMEMBER TO RACE SAFE AND HAVE FUN!