1. Mount the red arming switch within easy reach, and plain sight of the driver.
2. The system is furnished with a universal wide-open throttle switch. This WOT micro-switch is designed to work with the universal mounting bracket. It’s maximum capacity is 10 AMPS and should only be used to activate low amp draw accessories or in conjunction with a relay.
A. Assemble the micro-switch on the mounting bracket using the supplied 3⁄4” 4-40 bolts and nuts. The switch can be mounted in several different configurations, select the position you require and tighten the bolts. Do not over-tighten, the plastic micro switch can be damaged.
B. The mounting bracket is made of easily bendable material and may be formed to any configuration that will allow it to place the WOT switch in the proper location.
C. The activation arm on the micro-switch is extra long. This allows you to twist, bend, or cut it to aid in the ease of installation. If you have a 4500 series Dominator the WOT mount is pre-made and designed to bolt to the left front carb stud, just bolt on and its ready to go!
3. The best power source for the nitrous system is the terminal on the back of the alternator labeled “BAT”. The next best power source is directly to the “Positive” post on the battery. Do not try to “Splice” into the factory wiring harness for a power supply, this will not have adequate amperage to operate the solenoids. If desired a 60 amp fuse may be installed in this circuit.
4. Follow diagram “C” when wiring the system, the relay must be used in all applications.
5. Solder all connections for a permanent trouble free installation.
6. The nitrous and fuel solenoids are rated only for intermittent duty. Do not engage either solenoid for more than 15 continuous seconds. Solenoids that have “burned or scorched” electro-magnets will not be replaced under warranty.
COMPLETING AND TESTING THE SYSTEM
1. After all components have been assembled on the vehicle and each piece has been verified for correct installation and the wiring has been rechecked and verified to be correct, it is time to test the system.
2. Do not open the bottle valve at this time.
3. Reconnect the negative battery cable.
4. Using the red, lighted toggle switch “Arm” the nitrous system.
5. Test the solenoid operation by “Engaging” the activation or WOT switch. All solenoids should “click “. If they do not recheck all wiring until the problem is found and corrected.
6. Open the nitrous bottle and check all connections for leaks. Retighten any fitting or connection that leaks and recheck.
7. Start the engine and check for fuel leaks, correct any fuel leak problems before proceeding.
8. Adjust the fuel pressure regulator to the recommended pressure at this time. NX recommends using a Master Flo-Check (PN # 15519) or the Master Flo-Check Pro (PN # 15529)
9. Do not purge the system into the motor i.e. Rev the engine and engage the system. Piston damage will result. The nitrous system should only be engaged when the engine is at full throttle, under load, with the car in motion.
10. All NX systems are intended for off road use only and should only be used in that context.
11. Choose a suitable testing area, your local racetrack is best. Drive the vehicle to verify all operations are normal and the throttle linkage is operating properly.
12. Pre-stage the vehicle, arm the system, purge the air from the supply line using 3 one-second bursts from the purge valve (PN 15600-15601). Stage and launch the vehicle, shutting off at the 60ft mark. Check all components and verify their proper operation.
13. Repeat the staging procedure, the system should be crisp and responsive, make a full throttle pass and shut the engine off for an 8 spark plug check to verify each cylinder is getting equal amounts of N2O and fuel. The plugs should all look alike, having little or no color. if they are sooty or black the fuel pressure must be reduced for optimum performance.
Do not attempt to start engine if nitrous has been accidentally injected while the engine was not running. Disconnect coil wire and turn motor with throttle wide open for several revolutions before attempting to restart. If it is not possible to disable the ignition then the spark plugs must be removed and the engine cleared or all nitrous before attempting to start engine.
- Never permit oil, grease, or any other readily combustible substances to come into contact with nitrous cylinders, valves, solenoids, hoses and fittings. Oil and certain gases (such as oxygen and nitrous oxide) may combine to produce a flammable condition.
- Never interchange solenoids or other appliances used for one compressed gas with those used for another.
- Identify the gas content by the label on the bottle before using. If the bottle is not identified to show the gas contained, return the bottle to the supplier.
- Do not deface or remove any markings, which are used for content identification.
- Cylinder valves should be closed except when nitrous is actually being used.
- Notify supplier of any condition, which might have permitted any foreign matter to enter the valve or bottle.
- Never drop or violently strike the bottle
- Keep valves closed on all empty bottles to prevent accidental contamination. Open the bottle valve for an instant to clear opening of any possible dust or dirt before usage. Aim bottle outlet away from all body parts. Do not point it in the direction of a person.
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, 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 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 2000 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 1000-PSI bottle pressure. This is extremely important and cannot be stressed enough. If your bottle pressure is below 1,000 PSI the system will run rich and will not produce the advertised horsepower. If the bottle pressure is above 1,050 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 (PN11107) 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 higher fuel pressure to compensate for the lighter fuel. If you use a fuel with a higher “SG”, a lower fuel pressure 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 and 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.
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:
- YOUR BUDDY!
- YOUR BUDDY’S FRIEND!
- THE LOCAL NITROUS GURU!
- 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!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!