AEM Water Methanol Failsafe Device 303020 User Manual

AEM Performance Electronics 2205 126th Street Unit A, Hawthorne, CA. 90250 Phone: (310) 484-2322 Fax: (310) 484-0152 http://www.aemelectronics.com Instruction Part Number: 10-3020 Rev 02  2011 AEM Performance Electronics 
 
 
 
 
 
Installation Instructions for P/N 30-3020 
 
Water/Methanol Failsafe 
 
(Injection Monitor) 
 
WATER/METHANOL FAILSAFE PARTS LIST 
 
 
 
 
 
 
 
 
 
This product is legal in California for racing vehicles only and should never be used on public 
highways. 
WARNING: 
!...

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INSTALLATION DIAGRAM 
 
OVERVIEW 
 
Water/methanol injection is used to lower air charge temps and reduce detonation which allows for aggressive tuning to 
be utilized while using a low octane base fuel.  When relying heavily on water/methanol injection a safety device is 
strongly recommended in order to prevent detonation and possible engine damage in the event of a leak or clog.  
Progressive injection systems have a dynamic flow output and monitoring both the injection flow rate and the...

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The Water/Methanol Failsafe also has an auxiliary input that can be used to trigger an alarm condition.  Users with the 
AEM W ater/Methanol Injection System (PN 30-3000 & 30-3001) can use the “Boost Safe” ground output to trigger the 
auxiliary input if any of the internal fault conditions are detected by the AEM progressive controller.  
 
NOTE: It is HIGHLY recommended that the Water/Methanol Failsafe be used in conjunction with the AEM 
Water/Methanol Injection Filter (AEM part# 30-3003)....

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Water/Methanol Failsafe Configuration Tab 
 
This is the section where the flow monitoring and alarm output functionality of the Water/Methanol Failsafe is configured.   
 
 
 
 
Flow vs. Injection Graph 
Description 
Displays flow vs. injection percentage data points. Flow points will be populated live whenever the PC is connected to the 
Water/Methanol Failsafe and injection is occurring. The current injection percentage and flow rate values are shown live 
on the right side of the graph.  This...

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Alarm Configuration 
Option Description 
Aux Input Status Shows the status of the auxiliary alarm input; on or off   
Alarm Delay  Period of time that measured flow can be outside the upper and low flow limit lines before an 
alarm condition is triggered; 100-1000 milliseconds 
Alarm Reset Period of time flow must be within the acceptable range before the alarm will automatically reset; 
1-10 seconds 
Disable Auto Reset Select to require power cycle to reset alarm; overrides the...

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Gauge Configuration Tab 
 
This is the section where the gauge backlighting is configured. 
 
 
 
 
 
 
 
 
Live Gauge View 
Backlighting Color 
Option Description 
Color Scale Adjustable RGB color levels; use to match gauge backlighting to OEM gauge backlighting color 
Needle Intensity Adjustable intensity level; use to select desired needle brightness 
AEM Presets Preset backlighting colors to match existing AEM analog gauges; seven color options are red, 
white, violet, teal, green, blue and...

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The Water/Methanol Failsafe PC software has a live gauge display.  Injection Percentage is shown on the left from 0-
100% and flow, in cc/min, is shown on the right.  The flow range shown in the live gauge will match the flow range 
selected in the Gauge Configuration tab.  Faceplate color can be black or white.   
 
  

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WATER/METHANOL FAILSAFE CONFIGURATION 
 
The following is a basic guideline strategy for configuring the Water/Methanol Failsafe for the first time.  The ideal time to 
configure the Water/Methanol Failsafe is while the vehicle is being dyno tuned for water/methanol injection.  Ensure your 
injection system is fully functional with no leaks or clogs or other issues before starting to configure the 
Water/Methanol Failsafe!    
 
1. In the W ater/Methanol Failsafe Configuration tab, click on Clear...

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3. With a baseline flow curve now established, click on Auto Set Limits and the software will produce its best suggested 
high and low flow limit lines based on the populated flow data shown on the graph. 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
High and low flow limit lines are automatically 
generated after pressing Auto Set Limits  

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4. Review and adjust the high and low flow limit lines as needed to contour the lines around the baseline flow curve by 
clicking and dragging on a break point.  Once a break point is selected you can also move left and right using the 
arrow keys and then move the break point up or down.  Pressing the Tab key will toggle back and forth between the 
high and low limit lines.   
 
 
 
 
 
 
5. Test the configuration using your anticipated normal operating conditions with varying injection...