AEM Introduces New Digital Wideband UEGO Controller Gauge With Bosch 4.9 LSU Sensor!


July 14th, 2014


AEM Introduces New Digital Wideband UEGO Controller Gauge With Bosch 4.9 LSU Sensor!
Wider sensor availability facilitates expansion of AEM’s World Famous UEGO gauge controller line

July 14th, 2014, Hawthorne, CA - AEM has released its new Wideband UEGO air/fuel ratio Controller Gauge that uses the Bosch 4.9 LSU sensor (PN 30-4110). The 30-4110 wideband UEGO AFR gauge will supersede the 30-4100 AEM Wideband UEGO Gauge that uses the Bosch 4.2 LSU sensor and the 30-4100 will be discontinued as soon as existing inventory is exhausted. Inventory on the 30-4100 is anticipated to be exhausted sometime in August 2014. Expanded availability of the 4.9 LSU sensor facilitated the change to this new gauge. For the foreseeable future all other AEM Wideband air/fuel products will remain unchanged and will continue to utilize the 4.2 LSU sensor.

The new 30-4110 Wideband UEGO Controller gauge is cosmetically identical to the original 30-4100 gauge.

The Bosch 4.9 LSU sensor has a faster light off time and draws less current than the 4.2 LSU sensor used with AEM's 30-4100 Wideband UEGO Controller Gauge. The 4.9 LSU sensors feature the same fuel compatibility as the 4.2 LSU and NEVER require free-air calibration when used with AEM's 30-4110 Wideband UEGO AFR Gauge.

The new 30-4110 Wideband UEGO Controller Gauge has the same display range and includes the same calibrated scale on its 0-5v output (10-20 AFR), for data logging or closed-loop feedback control when used with a standalone ECU.

  • Display/Output Gasoline values from 10 to 20 :1 AFR
  • 0-5V Output E85 values from 6.6 to 13.2 :1 AFR
  • 0-5V Output Ethanol values from 6.14 to 12.3 :1 AFR
  • 0-5V Output Methanol values from 4.4 to 8.8 :1 AFR
  • Display/Output Lambda values from .68 to 1.36


The 30-4110's 4.9 LSU sensor uses a different connector than the connector used with the 4.2 LSU sensors included with the original 30-4100 gauge controller. The sensors are not interchangeable between the two gauge controllers in any way, including changing connectors on the gauges.

AEM’s digital gauge-type controllers feature a LED display and sweeping LED "needle" that changes colors as AFR changes from rich to lean, a 52mm (2-1/16") gauge housing that fits in most gauge pods, and they can be remotely mounted virtually anywhere. AEM’s legendary Wideband UEGO ('you-way-go') Air/Fuel Ratio Controller Gauges unite accuracy, speed and control with an easy to read, digital interface. AEM created the first wideband controller and gauge combination in 2004.

30-4110 Wideband UEGO Controller Gauge Features:

  • Bosch 4.9 LSU wideband sensor and weld-in bung included
  • No free air sensor calibration required—ever
  • 52mm (2-1/16") gauge housing
  • 0-5v analog output (10-20 AFR range only)
  • Interchangeable black/white faceplates and black/silver bezels included

Advanced Engine Management's performance electronics are Engineered to Outperform. The company designs, manufactures and assembles engine management systems, wideband air/fuel systems, water/methanol injection systems, performance gauges, boost controllers, ignition components, fuel delivery components and adjustable cam gears at its corporate headquarters in Hawthorne, CA.