Nitrous Express CARBURETOR PLATE SYSTEMS - Manual (Page 6)

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POWER TUNING TIPS:
Nitrous oxide works well with all applications; 4 cycle, 2 cycle, diesel, and rotary engines. Each one has individual
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, adding 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 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. We recommend 1 to 2 degrees 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, plate, or nozzles with this system. Any attempt at this
could lead to serious engine damage.
11. All of our systems are designed to operate at 1000 PSI bottle pressure. This is extremely important and cannot be
stressed enough. If your bottle pressure is below 1000 PSI the system will run rich and will not produce the
advertised horsepower. If the bottle pressure is above 1000 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: