Sale Add to Cart AEM X-Series OBDII Wideband AFR Controller Gauge MSRP: $314.02 $314.02 $226.09 You save $87.93 AEM's X-Series OBDII Wideband UEGO AFR Sensor Controller Gauge (PN 30-0334) provides tuners who are using piggyback tuning modules or open source software with the ability to view AFR through the factory CAN-bus stream that is output by the factory ECU,... Add to Cart Compare