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3.3.3.2 Stage 1 & Stage 2 - Graph 

 

The Stage 1/Stage 2 graph displays a visual of the curve the controller will use to progress the nitrous/fuel solenoids.  The 
Ramp Builder App. will generate a linear curve based on your inputs and display it in graph menu.  Using the arrows, you can 
select 15 different points and manually slide them up and down to create your own curve.  

NOTE: NOS recommends only 

advanced users use this feature as improper tuning can result in engine damage.  

Displayed in the lower right hand 

corner will be the time and Duty Cycle % of the currently selected point   use this as a guide to dial in the curve.  If a high 
degree of accuracy is required simply quickly double tap the Stage 1/Stage 2 text 

enu  will appear.  

When complete, press the 

 save button.  If you made a mistake or do not want to save, press the 

 back button to exit 

the graph without saving. 

 
 
 
 

           

                                            

3.3.3.3 Stage 1 & Stage 2 - Configuration 

 

The configuration menu will allow you to adjust the following settings. 
 

 

 

PWM Frequency

   This is the frequency at which the solenoids are driven.  This is adjustable from 10 to 50 

Hz.  

NOS recommends a default setting of 20 Hz for most of our solenoids and 15Hz for the 

18178NOS & 18178BNOS.

  If using another brand of solenoids, check for their recommended frequency. 

 

Ramp/Pause Mode

   This allows the controller to either reset or resume the progressive ramp that has 

been programmed.  In reset mode, the ramp will start over from the beginning when the trigger has been 
deactivated and reapplied.  In resume mode, once the trigger is deactivated and reapplied, the ramp will 
return to the last point that the system was active and continue the ramp from that point. 

 

TPAS Mode

   Throttle position activation switch mode.  Changes the type of throttle input.  Choose from the 

following: 

 

WOT to GND   Switches when a ground signal is applied, commonly used with a WOT 
microswitch. 

 

WOT to 12V   Switches when a 12V signal is applied. 

 

TPS to 90% - Used with Throttle Position Sensors. 

 

Disable   Turns off the throttle input and only activates the stage based off RPM. 

 

Control Output Type

   Changes the output type for the stage.  Choose from the following: 

 

Active Low   Switch to ground 

 

Active Low (Pull Up)   Pulled up to battery (12V), switch to ground 

 

Active High   Switch to battery (12V) 

 

Active High (Pull Down)   Pulled down to ground, switch to battery (12V) 

 

Push-Pull   Battery (12V) when active, ground when inactive 

 

Control Output Delay

   The time (in seconds) the controller waits before turning on the control output

NOTE:

 This output is useful when using a timing retard, activation switch, or any other switch, which 

requires an input. 

 
 
 
 
 

Exit 
without 
saving

 

Time and % 
duty cycle of 
selected point

 

Change Selected Point.  Selected 
Point will be highlighted in RED

 

Save Graph

 

Double tap to enter Fine Tune 
Menu

 

Save

 

Exit without saving

 

Fine Tuning Menu

 

Use arrows to change values or 
press on the number to enter 
the manual entry.

 

Slide point 
up/down to 
edit

 

Summary of Contents for 25973NOS

Page 1: ...allation improper operation lack of reasonable care or all previously stated reasons resulting from incompatibility with Nitrous Oxide Systems Inc assumes no responsibility or liability for damages incurred by the use of products manufactured or sold by Nitrous Oxide Systems Inc on vehicles used for competition or racing Nitrous Oxide Systems Inc neither recommends nor condones the use of products...

Page 2: ...rtain gases such as oxygen and nitrous oxide may combine to produce a highly flammable condition Never interchange nitrous and fuel solenoids Failure to follow these simple instructions can result in extreme engine damage and or personal injury Never drop or violently strike the bottle Doing so may result in an explosive bottle failure Never change pressure settings of safety relief valve on the n...

Page 3: ...2 System Setup TPS Autoset 9 3 3 3 System Setup Stage 1 Stage 2 9 3 3 3 1 Stage 1 Stage 2 Setup 9 3 3 3 2 Stage 1 Stage 2 Graph 11 3 3 3 3 Stage 1 Stage 2 Configuration 11 3 4 Save Load Tune 12 3 5 Controller Setting 13 3 5 1 Touch Calibrate 13 3 5 2 Controller Info Firmware Upgrade 14 3 5 3 Dash Setup 14 Chapter 4 Hand Held Firmware Update 14 Chapter 5 System Operation Testing 15 5 1 Initial Test...

Page 4: ...tc A progressive 2 stage nitrous system works by pulsing each set of solenoids for a user defined start time cycle time and duration This NOS Mini 2 Stage Progressive Nitrous Controller allows the user to drive the solenoids at different times to tailor power delivery to the engine as needed The user can choose to utilize a window switch RPM a throttle position sensor TPS and or a microswitch to t...

Page 5: ...a rising or falling voltage The signal type is selected in the software configuration If you are not sure which wire this is consult a factory service manual NOTE CH 1 CH 2 trigger input wires can be used together or separate on the TPS sensor 6 The YELLOW ORANGE re programmable in the software for various purposes such as activating a timing retard etc These have different programmable output tha...

Page 6: ... of it to prevent shorting out Option 1 Pin Removal Recommended Method Required tools Small flat head screw driver Pin removal tool 567 101 Procedure 1 Use a small screwdriver or other prying tool to gently remove the protective cover from the back of the connector NOTE Be careful not to over extend the tabs on the cover or it will not securely fasten during reinstallation 2 Gently insert 567 101 ...

Page 7: ... the heat shrink a small pull to verify that it is solidly attached Chapter 3 Hand Held Setup 3 1 Home Screen The main screen of the NOS Mini 2 Stage Progressive Nitrous Controller displays the engine RPM Bottle Pressure if equipped Stage 1 Stage 2 activation RPM via colored bars Blue Stage 1 Yellow Stage 2 and Stage 1 Stage 2 ON OFF display ON is only displayed when the solenoids are actively bei...

Page 8: ...Outlet Coil Pack Systems Note Use this setting to expand the RPM range higher than 9900 For example on a 4 cylinder motorcycle this will allow for a higher maximum RPM window In this mode the control can be set at 3000 and 6000 which will activate at 6000 and 12000 This can only be done if the application is NOT a waste fire ignition system 2 12 cylinder engines when the tach wire is connected to ...

Page 9: ...noid 3 3 3 1 Stage 1 Stage 2 Setup The setup menu contains the settings which allow you to enable or disable the stage adjust activation and deactivation RPM and enter the Ramp Builder App Enable Disable Stage When a stage is disabled the stage will no longer activate the bar displayed on the RPM gauge will be removed and the menu selections for the stage will also be removed until the stage is re...

Page 10: ... tailor power delivery to activate when the power can be used most effectively i e delay the nitrous until after launching etc Ramp Time Time in seconds that the ramp builds to the End The more time added here the stage activation will become 0 seconds here will fully activate the stage all at once settings such as start and end will become invalid and not used Stage Duration Time in seconds that ...

Page 11: ... ramp that has been programmed In reset mode the ramp will start over from the beginning when the trigger has been deactivated and reapplied In resume mode once the trigger is deactivated and reapplied the ramp will return to the last point that the system was active and continue the ramp from that point TPAS Mode Throttle position activation switch mode Changes the type of throttle input Choose f...

Page 12: ...r you can choose to allow the software to save under the default name Once complete press OK Your tune is now saved to the SD card Downloading Tunes from NOS Visit https www holley com support nitrous_oxide_systems or alternately visit the product page of your specific kit Download desired tune Insert SD card into computer Save desired tune into the TUNES folder found on the SD card If the tunes f...

Page 13: ...creen 3 5 1 Touch Calibrate If you are having issues with the touch screen not responding or selecting the wrong thing please run the touch calibrate app This will guide you through the process and when successfully complete will calibrate the hand held to more accurately sense the stylus Upload Tune to Controller Delete Tune from SD Card Calibrate the Touch Screen View Controller Info Update firm...

Page 14: ...then select update firmware If you have more than one firmware update available then you will have to select the latest one 3 5 3 Dash Setup The main screen which displays the RPM gauge and bottle pressure can be changed to suit your vehicles min and max RPM limits If you do not have the optional 15661NOS bottle pressure transducer kit you can disable the bottle pressure display in the dash setup ...

Page 15: ... to a tach signal input White Red White Blue wires are connected to TPS or a microswitch Large Black wire is connected to a different ground than the small black wire Large Red large Blue wires are connected directly to the solenoids Solenoids are powered via a 12V relay Orange yellow outputs if used are connected to the proper locations Hand held powers up Nitrous parameters have been programmed ...

Page 16: ...TECHNICAL SUPPORT 1 866 464 6553 NOS Nitrous Oxide Systems Inc All rights reserved Tous Droits Réservés 199R11937 Revision Date 10 17 19 ...

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