Nitrous Express POWERSPORTS SYSTEMS WITH ELECTRIC INLINE FUEL PUMP 877-648-7687 - Manual (Page 5)

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the fuel pump, using the supplied hose and clamps. Run a line from the outlet side of the pump to the
fuel solenoid using the supplied hose and clamps. (The threaded female end of the fuel pump is the
inlet side; the brass barb or nipple is the outlet side.) A fuel filter is also included to be installed before
the pump on the threaded end. Use extreme caution when cutting and installing the rubber line to
prevent rubber debris from fouling the fuel solenoid or clogging the fuel jets. Do not allow either of
these lines to come in contact with the exhaust system or any moving parts i.e. suspension.
2. Competition bikes should route a line directly from the dual outlet petcock to the inlet side of the pump
using the supplied fuel line and clamps.
3. For added safety and reliability, a fuel pressure safety switch should be used. (PN 15708P). The
switch should be plumbed between the fuel pump and the fuel solenoid.
SECTION 4: WIRING THE SYSTEM
The triggering mechanism for NX Power Sports systems is a mechanical wide-open throttle micro-
switch. Follow the wiring diagram in “Illustration D”. If using a TPS autolearn switch for your triggering
mechanism follow “Illustration E”. In all applications, always use the furnished relay, this will insure
adequate voltage to the solenoids and take the high amperage load off of the trigger switch.
PROGRAMMING a TPS Wide Open Throttle Module with two LEDs.
The NX TPAS is designed to trigger a relay, 1 amp maximum current draw, at or near wide open throttle
and automatically calibrates itself to work with rising or falling signal.
1. The NX TPS Wide Open Throttle Module should be mounted in a place that it will be easy to
access the learn button and view the LEDs. Make sure the unit is located away from any heat
source, i.e. exhaust manifold, header, or EGR.
2. Following the wiring diagram, route all wires but make no connections.
3. You must determine which wire on your throttle body’s TPS is the output signal to the vehicles
computer. Connect all wires per NX Self- Programming Throttle Position Activation Switch
wiring diagram using a 1 to 3 amp fuse in series with the red wire.
4. On initial power up, press and hold the button while turning on switched +12 volts. The green
LED should begin flashing indicating that the unit is not programmed.
5. Release the button.
6. With the throttle at idle position, press and hold the button until the red LED comes on
(approximately 4 seconds). The green LED will continue to flash. Release the button and leave
the throttle at Idle. The unit is now calibrating the idle position and making sure that the idle
signal is stable. Wait for both LED’s to turn off.
7. Now move throttle to wide open and hold for 1 second, then release back to idle (Red LED
should come on to indicate that its working and waiting to check the calibration).
8. To check the calibration, move throttle to wide open again and then release to idle a second time.
Once the check is complete, the Red LED will turn off and the Green LED will turn on indicating
that the unit is calibrated and armed.
9. Once calibrated, the unit will activate the relay when the throttle opens to 90% or more and it will
remain on as long as the throttle is between 90% and 100%. (When the relay is activated, both the
red and green LEDs will be on). When the throttle closes to less than 90%, the unit will turn the
relay and the red LED off. The green LED will remain on indicating that the unit is re-armed and
ready for the next run.
10. If at any time during the calibration process the green and red LED’s flash rapidly in an
alternating pattern that means the calibration was not completed correctly. This can be the result