Nitrous Express EFI NITROUS PLATE SYSTEM FOR GT500 - Manual (Page 8)

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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:
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.