Owners manual

ManualsBrandsNitrous Express ManualsAutomotive20923-00 Stage One EFI Nitrous System

ELECTRONIC

FUEL INJECTED SINGLE NOZZLE

NITROUS SYSTEMS

INSTALLATION INSTRUCTIONS

Congratulations

on the purchase of your

Nitrous

Express EFI single nozzle system. Nitrous Express utilizes

only

the

highest quality components designed for the use

liquid nitrous oxide. To properly utilize these

specially

designed components and obtain the

trouble-free

operation that this system is capable of producing, it

is extremely important that you read all

instructions

carefully. Pay special attention to the important

notes

at the

end of the installation steps and the tuning

tips

listed at the back of this instruction

sheet.

All NX Stage 1 EFI systems are designed to

oper

ate on most vehicles with the stock fuel pump and no timing

retard up to 100hp. You should verify that the fuel pump maintains factory pressures while the nitrous system is

engaged, we also recommend running a NX fuel pressure safety switch (PN15718). On all settings above 100

horsepower the following precautions should be observed:

A. An extra capacity aftermarket fuel pump must be used, 250LPH recommended.

B. High octane race type fuel, and/or timing retard should be used to prevent detonation.

C. Increased strength internal engine components and high performance head gaskets may be required.

D. Depending on compression and fuel quality timing retard may be necessary to prevent detonation. If you have

an aftermarket ECU tuner that advances the stock timing, detonation could be a problem. These aftermarket

tuners can be compatible if higher octane fuel or NX Power Booster (PN # 16003) fuel additive is used.

To insure proper system assembly and operation, carefully read the following installation procedures thoroughly

before beginning:

A. Before starting, carefully disconnect the vehicle negative battery cable. If there is any question about this

operation, consult the vehicle owner’s manual!

B. DO NOT use any sealer on flare connections, hose, or bottle connections. For other connections use the

furnished NX red liquid thread sealer; use no other sealing compounds or Teflon tape.

C. Excessive tightening of parts is not necessary, snug is tight enough. If it is necessary to remove a fitting

installed with the red NX sealer, heat may need to be applied to release the sealing agent.

NOTE: Due to shipping restrictions all NX nitrous bottles arrive empty. Before beginning the installation the N2O

bottle should be filled by a NX accredited filling station. For filling station locations log on to

www.nitrousexpress.com

Summary of content (8 pages)

PAGE 1
ELECTRONIC FUEL INJECTED SINGLE NOZZLE NITROUS SYSTEMS INSTALLATION INSTRUCTIONS Congratulations on the purchase of your Nitrous Express EFI single nozzle system. Nitrous Express utilizes only the highest quality components d e s i g n e d for the use of liquid nitrous oxide. To properly utilize these specially designed components and obtain the trouble-free operation that this system is capable of producing, it is extremely important that you read all instructions carefully.
PAGE 2
Illustration A MOUNTING THE BOTTLE Slide bottle into bottle brackets. Use illustration A as a guide for proper alignment. Locate bottle assembly in a mounting area that will provide easy access to bottle valve for hose connection and bottle removal. Using the bottle unit as a pattern, mark and drill four 3/8” holes. Note: Before drilling holes be sure to check beneath the area being drilled for obstructions, fuel lines or fuel tank. Then secure unit to mounting surface.
PAGE 3
Illustration B Note: It may be necessary to vary the exact mounting point due to space and/or accessory limitations on certain models. The photos should be used as a guide for proper nozzle location. 1. Remove the air inlet tube. Drill a 9/16” hole in the location you have chosen for the nozzle placement. This area should be as flat as possible to assure proper sealing of the nozzle adaptor. 2. Using a silicone RTV type sealer, apply a thin bead around the nozzle adaptor sealing surface.
PAGE 4
1. Located on the fuel log (injector rail) is a “test port” fitting used by mechanics for checking fuel pressure. This is usually covered by a black plastic cap and is where the red fuel feed line will be connected. Note: Care should be taken to be certain the port you have selected is the “Fuel Test-Port”. Many late model cars have several similar ports that do not contain fuel. 2. Remove the protective cap from the test port fitting.
PAGE 5
9. Attach the “White” wire from the relay to the fuel safety switch (PN 15118 optional) terminal marked NO. Using the 18-ga. blue wire, attach the other terminal on the safety switch marked (C) to ground. (See wiring Schematic) Note: If a fuel safety switch is not used simply attach the “White” wire on the relay to ground. 10. Reconnect the negative battery cable. 11. At this point both solenoids should be tested for proper operation.
PAGE 6
After a complete check and verification of all components of the system for proper installation and operation it is time to have some fun. TESTING AND USING THE SYSTEM: All NX systems are designed for off road usage. Use extreme caution and observe all safety precautions (see your vehicles owner’s manual). Select a suitable test area; your local racetrack is best. Arm the system with the cockpit N2O arming switch. Gently launch the vehicle, gradually accelerating to wide-open throttle.
PAGE 7
methanol applicaiotns, smaller gap may be required. 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.
PAGE 8
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.