AEM's X-Series Wideband Air/Fuel Ratio Gauge is built on patented X-Digital technology (Patent 9,575,030), making it one of the fastest responding wideband controllers in independent testing. AEM co-developed its wideband sensor with global automotive supplier FAE for faster response and reduced failure rates in high performance vehicles. It can be used on EFI or carbureted applications with gasoline (including leaded race gas), methanol, ethanol, diesel, propane, and CNG. This product carries a California Proposition 65 warning per the manufacturer's data.
The gauge mounting surface measures 2-1/16 in. (52mm) in diameter and features a center display 87% larger than the previous 30-4110 gauge's display, with a slim overall depth under one inch. A user-configurable display lets users switch between AFR, Lambda, or O2%, change between three and four digit readouts, perform free-air calibration, and change the CAN message ID when linking multiple X-Series controllers.
Specifications:
- AFR Scale: 8.50:1 to 18:1
- Gauge Diameter: 2-1/16 in. (52mm); slim 0.825 in. depth, 0.200 in. cup depth
- Auto-Sensor Detection between AEM FAE and Bosch LSU 4.9 wideband sensors
- Compatible with supply voltages up to 16V
- 0-5V and RS232 output for data logging/feedback control; AEMnet CANbus for daisy-chaining up to 16 cylinders
- Auto-dimming feature
- Black bezel and black double-sided faceplate (silver bezel/white faceplate sold separately, PN 30-0300-ACC)
- Part Number: 30-0300
FAQ
What fuel types is this gauge compatible with?
It works on EFI or carbureted applications using gasoline (including leaded race gas), methanol, ethanol, diesel, propane, and CNG.
Can the display be reconfigured?
Yes, buttons on the gauge face let users switch between AFR, Lambda, or O2%, change between 3- and 4-digit readouts, and perform free-air calibration.
What sensor types does it detect?
It features Auto-Sensor Detection between AEM FAE and Bosch LSU 4.9 wideband sensors.
