Nitrous Express Proton Nitrous Systems - Manual (Page 3)

tuning characteristics, and these tips apply generally to each
one. Nitrous oxide is referred to as “Liquid Supercharging”
because it, in effect, does the same thing as a mechanical
supercharger, forcing more fuel and oxygen into each
cylinder, thus producing more power. The biggest enemy of
all supercharged, turbo charged and nitrous injected engines
is “DETONATION”. The use of higher-octane fuel, and or a
combination of better fuel and timing retard can control this.
Remember detonation is a spark plug, head gasket and
engine “KILLER”.
1. Your engine should be tuned to its maximum power prior
to nitrous usage.
2. The ignition is an integral part of the nitrous system and
must be able to ignite the mixture under very high
cylinder pressures. The hotter the spark the better!
3. In stock engine applications and street usage the spark
plugs should be at least 2 steps colder than stock. 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 avail-
able. 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:
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