Filter
Top Products
15
2.9 Preparing for Operation
1. Start the vehicle.
2. Open the nitrous bottle valve. There should be no change in the engine idle speed or exhaust tone. If either change is
noted, refer to Appendix A, Troubleshooting Guide.
3. Inspect the nitrous lines and fittings for leaks.
4. ENJOY!!!
Chapter 3 Tuning Suggestions
Your NOS Kit Number 05177NOS is factory set to work with stock engine settings. For maximum performance, follow the
settings listed in Table 2.
Table 2 Tuning Suggestions for NOS Kit Number 05177NOS
N
2
O Jetting HP Fuel Quality Ignition Timing Plugs
.028 75 92+ Octane Stock Stock
.030 85 92+ Octane Stock Stock
.032 100 92+ Octane Stock Stock
Appendix A Troubleshooting Guide
The troubleshooting chart on the following pages should help determine and rectify most problems with your installed NOS
system. If you still need assistance determining or fixing problems, call the NOS Technical Support at 1-866-GOHOLLEY.
PROBLEM POSSIBLE CAUSES DIAGNOSTIC PROCEDURE CORRECTIVE ACTION
Bottle valve not fully opened. Check bottle valve. Open valve fully.
Plugged nitrous filter. Inspect filter. Clean/replace filter.
Low bottle pressure. Check bottle temperature. Set bottle temperature to 75°
to 85°F.*
Inadequate nitrous supply. Weigh bottle. Fill bottle. 1-800-99-REFILL
Loose nitrous solenoid
wiring.
Inspect the solenoid wiring. Repair wiring.
Engine runs rich when
system is activated.
Malfunctioning solenoid. Disconnect solenoid/injector plug .
Connect 12V test light to battery (-)
terminal. Turn arming switch ON.
Manually set microswitch ON. Use
test light probe to check for continuity
at blue wire on power relay.
Replace solenoid.
*Below 70° F ambient, NOS
Bottle Heater #14164 is
recommended to maximize
performance.
Bottle valve closed. Check bottle valve. Open valve fully.
In-line fuse blown. Check fuse. Replace fuse.
Plugged nitrous filter. Inspect filter. Clean/replace filter.
System wired incorrectly. Compare nitrous wiring to schematic. Wire system per instructions.
Loose ground wire(s). Connect 12V test light to battery (+)
terminal. Check for continuity at
grounds noted in schematic.
Tighten/repair loose grounds.
Malfunctioning arming
switch.
Turn arming switch ON. Connect
12V test light to battery (-) terminal.
Check for power at red wire on power
relay switch.
Replace arming switch.
No change in
performance when
system is activated.
Malfunctioning throttle
microswitch.
Temporarily disconnect power relay
green wire from microswitch.
Connect 12V test light to battery (+)
terminal. Manually set microswitch
ON. Check for continuity at open
terminal of microswitch (See wiring
schematic).
Replace throttle microswitch.
Excessive ignition timing. Check ignition timing. Set timing to factory settings.
Inadequate octane fuel. Use higher octane fuel.
Engine detonates
mildly when system is
activated.
Spark plug heat range too
high.
Reduce spark plug heat
range (maximum two steps).