Relay, Figure d, Figure c 3 – Nitrous Express MainLine Nitrous Systems User Manual

Page 3

Wiring the System

Follow the wiring diagram in Figure “C” if no relay is being

used, follow the diagram in Figure “D” if a relay and wide open

throttle is being used (recommended). For proper operation do

not vary from this diagram. Solder and seal all connections with

tape or heat shrink tubing (recommended)

Note: 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.

Testing the System

1. Recheck all installation procedures to be sure

nothing has been omitted.

2. Be sure the nitrous bottle has not been opened and

the supply line is empty!

3. Reconnect the Negative battery cable.

4. Using the toggle switch “ARM” the system.

5. Test solenoid operation by using the system

activation switch. You should hear both solenoids

“CLICK”. If they do not, re-verify all wiring and

retest the system.

6. Carefully open the nitrous bottle and verify that no

fittings or hoses are leaking. Correct any leaks

before proceeding.

7. Do not start the engine if nitrous has been

accidentally injected while the motor was not

running! All nitrous must be cleared from the

engine before starting! A violent intake manifold

explosion could occur!

8. Start engine and check for any fuel leaks. Correct

any leaks before proceeding.

9. The MainLine Nitrous System is now ready for

normal usage.

Additional parts recommended to operate your MainLine nitrous

system satisfactorily:

• Nitrous Pressure gauge (NX PN 15509)

• Purge Valve (NX PN 15600)

• Wide Open Throttle Switch & Bracket (NX

PN 15516 & 15517)

• Bottle Jacket (NX PN 15945)

• Fuel pressure Safety Switch (NX PN 15708

carb or 15718 EFI)

• 30 Amp Relay (NX PN 15515)

• Bottle heater (NX PN 15940)

• NHRA legal blow down vent fitting (NX PN

11709)

• NHRA legal blow down vent tube (NX PN

11708)

• Chemical X Octane booster (NX PN 16003)

• Ford EFI fuel rail fitting eases installation on

Ford products (NX PN 16179)

These or any other MainLine parts can be ordered by calling 1-

888-289-6261 9:00 A.M. – 4:00 P.M. EST

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”.

grd acc power

NEG

POS

12 Volt Battery

Ground

Switched
12 Volt +

Black 12 Volt +
to Battery

Optional Fuel
Pressure Safety
Switch

White

Ground

Green

Ground

Relay

Red

Must be Grounded

18GA

14GA

18GA

14GA

Nitrous

Fuel

Figure D

grd acc power

To Keyed 12 Volt +

14GA

18GA

14GA

Nitrous

Fuel

Figure C