AEM's Wideband Failsafe Gauge provides the ability to accurately tune AFR, while actively protecting your engine by constantly monitoring AFR curves and activating a user-defined failsafe strategy if it runs lean.
The Wideband Failsafe Gauge is a Universal Exhaust Gas Oxygen (UEGO—“you-way-go”) controller with an internal boost sensor, an internal data logger and a full color Organic Light Emitting Diode (OLED) display. It includes technology to activate a failsafe strategy in the event AFR falls outside of a user-defined operating window. If the AFR falls outside of the set operating window, the Wideband FAILSAFE Gauge triggers a user defined output function that can save an engine from catastrophic damage.
This gauge is a must have for all tuned performance engines, either forced induction or naturally aspirated, fuel injected or carbureted. Any high performance vehicle owners who want a highly accurate AFR tuning tool with internal data logging and a protection strategy that can save an engine from catastrophic failure will want this Failsafe device.
Since the Wideband Failsafe Gauge is a wideband AFR controller with an internal boost sensor (up to 29 PSIg), it is able to display AFR and either boost or vacuum in real time on a vibrant Organic LED screen. It also includes an on board data logger that records AFR, RPM* and boost/vacuum and can be downloaded and viewed in AEMdata analysis software. The gauge includes a low side output for triggering a failsafe strategy in the event AFR falls outside of the operating window, and an RPM input* to log RPM for tuning purposes.
The gauge’s failsafe strategy is completely user definable, from something as simple as making the gauge flash to using the ground output to trigger a check engine light, to cut boost, retard timing, or even switch to a safety map using a standalone engine management system.
The Wideband Failsafe Gauge’s software simplifies the interface set up. Choose displayed parameters (AFR, boost or vacuum) on the center OLED screen and bar graph, set the alarm flash mode and adjust the gauge’s lighting for a custom look, then install the correct faceplate to match your configuration (6 faceplates to choose from).
(*Please see important information regarding using the RPM input for the Wideband Failsafe Gauge on the "Specs" tab)
WIDEBAND FAILSAFE GAUGE TECHNICAL FEATURES:
WIDEBAND FAILSAFE GAUGE INSTALLATION FEATURES:
WIDEBAND FAILSAFE GAUGE FACEPLATE STYLES:
**IMPORTANT INFORMATION REGARDING USING THE RPM INPUT FOR THE WIDEBAND FAILSAFE GAUGE
The AEM Wideband Failsafe Gauge’s (WBFS) engine speed (RPM) input requires a clean square wave tachometer-type signal in order to log engine speed properly.
The voltage of this signal must NOT exceed 16V or go below vehicle ground (zero volts.)
Here are examples of signals that WILL NOT work and could cause damage to the gauge:
Here are examples of suggested RPM input configurations:
*Note: Install the GMR Pickup as per MSD instructions; the GMR is generally installed on the “+” side of referenced signals.
If a signal’s waveform is unknown and cannot be verified with an oscilloscope, it’s safest to assume that the signal won’t work and could possibly damage the gauge. In these cases, it is suggested that the MSD GMR Pickup be utilized to pick up off of an ignition coil.