Nos 25973NOS Installation And Operation Manual

Mini 2-stage progressive nitrous controller

Advertisement

Quick Links

MINI 2-STAGE PROGRESSIVE NITROUS CONTROLLER
25973NOS & 25974NOS
INSTALLATION AND OPERATION QUICK START GUIDE
FEATURES:
The NOS Mini 2-Stage Progressive Nitrous Controller is a fully
featured progressive nitrous controller offering control of up to 2
individual stages and can be fully programmed via a handheld LCD
touch screen display. An SD (Secure Digital) memory card reader is
built-in on the handheld controller to store and upload tunes and is
used for updates.
Solenoid operation can be controlled based on time, RPM, and/or
TPS input and can shut nitrous off at a programmed RPM ceiling.
The configurable nitrous and fuel ramps can be programmed in any
curve shape or with the built-in ramp builder app.
The controller housing is designed and constructed in a manner to
endure the typical harsh conditions found in a racing environment.
The controller can be mounted in the engine or passenger's
compartment. It is advisable to keep the controller away from direct
heat and severe vibration. Although not required, it is beneficial to
use rubber isolators when mounting the controller on applications
that may see severe tire shake, etc.
1

Advertisement

Table of Contents
loading
Need help?

Need help?

Do you have a question about the 25973NOS and is the answer not in the manual?

Questions and answers

Subscribe to Our Youtube Channel

Summary of Contents for Nos 25973NOS

  • Page 1 25973NOS & 25974NOS INSTALLATION AND OPERATION QUICK START GUIDE FEATURES: The NOS Mini 2-Stage Progressive Nitrous Controller is a fully featured progressive nitrous controller offering control of up to 2 individual stages and can be fully programmed via a handheld LCD touch screen display.
  • Page 2 CONTROLLER INSTALLATION & WIRING:...
  • Page 3 The NOS Mini 2-Stage Progressive Nitrous Controller accepts most tach signals, including low-voltage and irregular signals, such as those found on many V-10s. Each channel will drive a fuel or nitrous solenoid progressively. The Throttle Position Activation Switch (TPAS) accepts all analog throttle position sensor signals as well as a “hot”...
  • Page 4 can supply two amps to the unit. If this is not available, you should install a fuse holder. 3. Connect the GREEN wire to the RPM pickup point. You will define the proper RPM conversion in the software setup. This wire can go to the typical “tach out”...
  • Page 5 HANDHELD The main screen of the NOS Mini 2-Stage Progressive Nitrous Controller displays: engine RPM, Bottle Pressure (bottle pressure display can be turned on or off in the dash setup menu), Stage 1 &...
  • Page 6 Go back to the Home Screen Enters System Setup, Stage 1 Setup, & Stage 2 Setup Menus Save & Upload Tunes Update Controller, adjust Home Screen RPM display limits, touch screen calibration, & enable/disable bottle pressure display In the Nitrous Configuration menu, you will be presented with a choice of three menus –...
  • Page 7 Back on the Stage 1 Menu select the configuration button. Within the menu you will set up the following: PWM Frequency - NOS Recommends 20 Hz for most of our solenoids. Ramp/Pause Mode – This allows the controller to either...
  • Page 8 In the main menu you will see the Save/Load Tune menu. Here you can save your current tune, upload a previous tune, or upload one of our NOS tunes that have been calibrated for various vehicle specific nitrous kits. Tunes can be found here: https://www.holley.com/support/nitrous_oxide_systems/...

This manual is also suitable for:

25974nos

Table of Contents