Auto Meter 4378 - Manual (Page 3)

Wide Open Throttle Peak/Recall mode:
WOT Peak/Recall mode provides you with a quick and easy way to find out exactly how “Lean” your engine / vehicle got during the last pull,
run, or race. This value is recorded when the Brown Wire in the instrument harness is connected to a good engine ground via a normally
open, momentary closed wide open throttle switch (not included, see wiring diagram) such as may be used with a Nitrous Oxide application.
This allows peak readings to be sampled only during wide open throttle conditions. If the Air / Fuel Monitor gauge will not be used with a Wide
Open Throttle switch, connect the brown wire permanently to a good engine ground to continuously monitor for peak conditions.
To View:
From Real-Time Mode, press
mODE (-) to scroll until the display indicates “P”, then press SELECT (+) to display your Peak.
To Clear:
When the Peak value is displayed, press
SELECT (+) to clear your Peak value and return to Real-Time Mode. The SSD will display “---
“once the peak has been cleared and until a new peak value has been recorded.
If neither button is pressed for 3 seconds after the Peak Value is displayed, the gauge will return to Real-Time Mode.
Wide Open Throttle Alarm/Warning mode:
Alarm/Warning mode enables you to program a visual alert point into the gauge in order to warn you of when air/fuel mixtures are running dangerously
lean in your vehicle’s engine. The visual alarm or warning activates when the AFR or Lambda reading reaches or exceeds your programmed alarm
point. When the alarm activates the BGD will blink rapidly to warn the driver of the Alarm condition. Similar to Peak/Recall Mode, this function only
operates when the Brown wire is grounded via a normally open, momentary closed, wide open throttle switch (not included , see wiring diagram) such
as may be wired with a Nitrous Oxide application.
To View your current Alarm Point Setting:
From Real-Time Mode, press mODE (-) to scroll until the display indicates “ALr”, then press SELECT (+) to display your current
Alarm set point.
If neither button is pressed for 3 seconds after the Alarm Point Setting is displayed, the gauge will return to Real-Time Mode.
To Change your Alarm Point Setting:
When the current Alarm set point is displayed, press SELECT (+) to increase your alarm point setting, and mODE (-) to decrease
your alarm point setting.
After you have selected your new alarm set point, the gauge will flash your new set point 5 times on the display and then the SSD
will display “S C” for Save/Cancel.
To confirm your new alarm point setting, press mODE (-). This will save your Alarm set point changes and return
the gauge to Real-Time mode.
To cancel the changes and return to your previous set point, press SELECT (+). This will cancel the Alarm set point changes and
menu Options:
There are several other features provided by your Auto Meter Wideband Air/Fuel Ratio gauge. Use the mODE (-) button to navigate
through the following options in order:
Peak/Recall - SSD will display “P”
Alarm/Warning - SSD will display “ALr”
Stoichiometric AFR Setting - SSD will display “AFr”
BGD Range – SSD will display “dSP”
Auto-Dim – SSD will display “Br”
Heater – SSD will display “Htr”
Once the desired option is displayed on the gauge, press the SELECT(+) button to confirm your selection. Specific Menu options are out-
lined in the following section.
If no selection is desired, you may continue to press mODE (-) until you return to Real-Time Mode or press neither button for 3 seconds
and the gauge will return to Real-Time Mode on its own.