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AEM Failsafe Gauge, Wideband and Boost Display

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AEM Failsafe Gauge, Wideband and Boost Display

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).


  • Displays both boost or vacuum and AFR or Lambda simultaneously on the same gauge

  • Internal boost sensor

  • Bosch Wideband UEGO sensor and weld-in bung included

  • On-Board 3+ hour Datalogging capability at 20hz per parameter (AFR/Lambda, Boost/Vacuum and RPM**)

  • Full color Organic Light Emitting Diode (OLED) Display in center, user selectable feature (boost/vacuum or AFR)

  • 24 three-color sweeping LEDs, user selectable feature (boost/vacuum or AFR)

  • Intuitive set up software

  • Dimmer input included

  • Interchangeable faceplates and bezels (see options, below)

  • No free air calibration required—ever

  • Data analysis using AEMdata software


  • AEMnet compatible (CAN 2.0)

  • Differential AFR analog output

  • Differential boost analog output

  • Configurable RPM input for logging

  • One low-side driver output (Ground with 1.5 amp max draw)

  • Positive-lock connectors

  • Tunable PC-based software with USB connectivity

  • Time based reset for outputs


  • Kit comes with 6 different faceplates and black and silver bezels.

  • Black Vacuum only in sweeping LEDs

  • Black and White AFR in sweeping LEDs

  • Black and White Vacuum/Boost in sweeping LEDs

  • Black Lambda in sweeping LEDs




WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov



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