Nitrous Express Hitman EFI - Manual (Page 4)

trolled by the ignition switch. (Use 20 amp in line
fuse if desired). (See wiring Schematic).
3. Connect a grounded wire to the “Ground” termi-
nal of the toggle.
4. Your system is furnished with a Push Button. It
is usually mounted within reach of the driver or
alternatively under the throttle pedal inside the
car. In any case it should only be used at wide
open throttle.
5. Attach a 14-ga. jumper wire from the remaining
terminal “ACC” of the toggle switch to one of the
terminals on the N2O Activation button.
6. Using the 14-gauge wire connect the remain-
ing push button terminal to one wire each of the
nitrous and fuel solenoids.. (See wiring diagram).
\WITRING SCHEMATIC
7. Attach the remaining wires from each of the sole-
noids to a ground. Note: These coils are direct
current and it does not matter which wire is used.
8. Reconnect the battery cable.
9. At this point both solenoids should be tested
for proper operation. Note: (Be sure the nitrous
bottle is off and there is no pressure in the N2O
supply line. If you are using a fuel safety pressure
switch you must use a jumper wire between the
NO and C terminals when testing the solenoids).
To do this, turn the “arming” toggle switch to the
ON position and push the “activating” switch. A
clicking sound should be heard as the solenoids
open. IMPORTANT: Make sure that both of the
solenoids are clicking! If no sound is heard, check
all wire connections and the wiring schematic for
proper connections.
10. With all components mounted, feed line and elec-
trical connections completed, FULLY open the
nitrous bottle valve and carefully check connec-
tions on the nitrous side of the system for leaks
and retighten fittings if necessary. With no leaks
detected, then start the engine and thoroughly
check the fuel connections for leaks.
11. After a through check and verification of all com-
ponents 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 precau-
tions (see your vehicles owner’s manual) select a
suitable test area, your local race track is best. Arm
the system with the cockpit N2O arming switch.
Gently launch the vehicle, gradually accelerating to
wide open throttle. When WOT is achieved activate
the nitrous system, a noticeable surge of power should
be produced. If not, stop and recheck all installation
procedures. Call the factory tech line if the problem
cannot be located. NOTE: All vehicles equipped
with factory rev-limiters should take extreme care not
to over-rev the engine. If the rev-limiter is engaged
with the N2O system on, serious engine damage
could result. An NX RPM switch (PN #18959 or
PN # 18959M) should be used to disengage the N2O
system 200 RPM’s before the rev-limiter activates.
Your NX system is now ready for regular usage
Note: The nitrous and fuel solenoids are rated only
for intermittent duty. Do not engage either solenoid