Q. Purge valves look cool, should I get one for my nitrous vehicle?
A. A purge valve is a valuable tool for increased nitrous performance. It allows the user to “Purge” all gaseous nitrous from the bottle supply line prior to using the system. This allows for a harder “Hit” from the system thus increasing performance.

Q. What is the difference between a wet and a dry system?
A. A “Wet” system introduces a homogenous mixture of nitrous and atomized fuel into the incoming airstream, thus providing a perfect air/fuel ratio for each cylinder. A “Dry” system introduces raw nitrous into the incoming airstream and depends on the EFI’s injectors to provide the fuel enrichment. The problem with this method is no intake manifold has perfect distribution and this allows each cylinder to receive differing amounts of raw nitrous but only provides a preset amount of fuel from each injector. This results in rich-lean conditions throughout the engine, often causing engine damage.

Q. What safety features come with a nitrous system?
A. There are several safety related devises that can be used with a modern nitrous system. The first, and most important is the wide-open throttle switch. This prevents the user from accidentally engaging the system. A special high flow nitrous filter is furnished with every NX street system. All hoses are aircraft quality stainless steel braided, Teflon. All NX systems come with the highest quality, made in the USA, Lightning solenoids.

Q. Can I still run my vehicle all-motor with nitrous installed?
A. Of course, the nitrous system only affects performance when it is being used.

Q. How does the solenoid know when to open and release the nitrous oxide?
A. All NX systems are furnished with Wide Open Throttle switches. This switch signals the solenoids to open when the motor reaches wide-open throttle.

Q. What are the differences between a dry nozzle and a wet nozzle?
A. The “dry” system uses the factory fuel injection to enrich the nitrous introduced into the engine. The flaw with this technology is that no matter how much nitrous arrives at a certain intake port it always gets the same preset amount of fuel, or if a fuel injector becomes clogged engine damage will result. The “Wet” technology introduces a precise amount of fuel and nitrous through a high tech mixing nozzle that atomizes the fuel to microscopic proportions. This allows every cylinder to receive a precise, homogenous mixture of fuel and nitrous, thus insuring a safe, powerful increase.

Q. How can nitrous blow my engine up?
A. Nitrous in and of itself cannot “blowup” an engine. Nitrous kits of poor design, poor quality, and improper air/fuel ratios damage engines.

Q. What is nitrous backfire?
A. Nitrous backfires can be caused by two situations. 1. A nitrous system that is two rich or a system that atomizes the fuel poorly, thus causing pooling or puddling of fuel in the intake manifold. 2. A system that is operated too lean.

Q. Can I hide my nitrous system from a novice tuner?
A. Yes, it is quite easy to hide an NX system from the casual observer.

Q. What pressure should my nitrous bottle be at?
A. All NX systems are calibrated to operate at 900-1050 PSI.

Q. What if the pressure is too high, should I cool it?
A. If the bottle pressure is in excess of 1100 PSI the bottle should be cooled using a wet towel or chamois.

Q. How much of a horsepower increase can I expect from a nitrous system?
A. All NX systems make within 2% of their claimed horsepower, if you jet the system for 50 horsepower then you can expect no less than 49 horsepower, usually a few more than the rated amount.

Q. Are there any dangers or things to stay away from while using nitrous?
A. Of course, NX recommends that no more than an additional 20 horsepower per cylinder be used on a stock engine, with a stock fuel pump. Always be sure you are using clean, uncontaminated nitrous. Also, be sure you have the highest octane fuel available, I.E. 93 octane premium for, stock compression, street cars and the highest motor octane fuel available for competition type vehicles.

Q. Is there a trade off for engine reliability and power produced with
nitrous?
A. When used according to factory recommendations, shortened engine life should not be a concern.

Q. How long will a bottle of nitrous last?
A. That depends on the level of power being produced. The formula for calculating your nitrous usage is: .8 lbs N2O X 10 seconds = 100 horsepower. I.E. If your system is jetted for 100 horsepower it will use .8 lbs of nitrous for every 10 seconds of usage.

Q. How much does it cost to get refilled?
A. The cost of nitrous oxide varies with the region of the country, however a general estimate would be between $3.50-5.00 per pound.

Q. Can you feed an engine too much nitrous even if you keep the air/fuel
ratio the same?
A. Yes, if the mechanical limits of the engine are exceeded catastrophic engine failure will result.

Q. What comes with a nitrous kit?
A. Most NX systems come complete with a 10 lb nitrous bottle, stainless steel bottle brackets, 16 ft aircraft style supply line, N2O filter, lifetime warranty nitrous and fuel solenoids with mounts, all standard jet settings, an NX patented Shark nozzle (nozzles), or a patented carbureted plate, wide open throttle switch, a complete installation pack that includes all bolts, nuts, washers, wire, wire terminals, lighted arming switch, and complete instructions with pictures.

Q. How high must the RPM’s before activating nitrous?
A. The RPM level is not as important as is the motors ability to rev freely when the nitrous is engaged, I.E. If the vehicle is in low gear nitrous can be engage at any time, but if the vehicle is in a higher gear moving at a slow speed when the nitrous is engaged the engine will detonate and damage will occur.

Q. Does nitrous increase cylinder temperatures and combustion chamber pressure?
A. No, cylinder temperatures should stay the same when the correct nitrous air/fuel ratio is used. Yes, increased cylinder pressure equals increased horsepower.

Q. Can I use nitrous on my high compression engine?
A. Yes, but the proper octane fuel must be used to prevent detonation.

Q. Can I use nitrous on my turbo or supercharged vehicle?
A. Yes, NX specializes in turbo-supercharged nitrous applications.

Q. What are some general rules for creating the most horsepower without damaging anything?
A. Generally speaking the amount of power that can be created with nitrous is almost limitless. To avoid a catastrophe the internal components of the engine must match the amount of power that is going to be generated. The use of proper air/fuel ratios is essential and the quality of the nitrous system is paramount.

Q. What is meant by 30, 50, 100, 150, and 200 shots?
A. “Shot” is commonly used slang in the nitrous community to refer to the amount of horsepower increase provided by the nitrous system.

Q. Will a bigger bottle give you more horsepower?
A. No; however a larger capacity bottle will provide a more stable bottle pressure resulting in a lower E.T. and a higher M.P.H.

Q. What is the difference between a 1 stage and a 2-stage system?
A. A single stage system refers to one single nitrous system; a 2 stage or dual stage incorporates two nitrous systems on one application. This allows a bike to launch with the maximum horsepower possible, with the traction available, then add more power down track as the bike will handle it.

Q. Why does my engine need more fuel while on the bottle?
A. The fuel, or gasoline, is the source of the additional horsepower. The nitrous’ job is to provide the oxygen to allow the fuel to be burned.

Q. How can my engine get more fuel while on the bottle?
A. All NX systems add additional fuel during nitrous usage by injecting it directly with the nitrous through their patented “Piranha” nozzle. This method assures 100% atomization of the fuel and accurate air/fuel ratios

Q. How long can I squeeze nitrous in my engine?
A. With an NX system the only limitation is the capacity of the N2O bottle or the RPM limit of the engine.

Q. When is the best time to use nitrous?
A. When you want to go fast!

Q. How can a nitrous system be activated (a “happy button”, automatically, or what)?
A. All NX systems come standard with wide-open throttle switches, however we offer an electronic TPS switch as well as a push button.

Q. Can I vary the amount of nitrous injected when I want?
A. Yes, by utilizing one of NX’s digital progressive controllers. These devises allows the user to precisely control the amount of nitrous delivered to his engine from the comfort of the riders seat.

Q. Is there any harm that can be done to my engine if I use nitrous while the bottle pressure is too high?
A. Yes, the nitrous system will run “lean” if the nitrous pressure is high beyond specification. This could cause severe engine damage.

Q. Do you have an installation manual online so I can see if I want to install a kit on my bike?
A. Yes go to www.nitrousexpress.com, click on installation instructions, then find the application you are looking for.

Q. How does a nitrous system know when I’m at wide-open throttle?
A. All NX systems are equipped with wide-open throttle micro switches, or an optional electronic TPS switch is available.