Instructions for the 30-4100 will still be available in the Instructions tab after this change. Accurate AFR data is critical when tuning an engine.
AEM Digital Wideband UEGO Gauge
AEM 30-4110 Digital Wideband UEGO AFR Gauge with Sensor
AEM 30-4110NS Digital Wideband UEGO Gauge w/o Sensor
AEM 30-4110 Digital Wideband UEGO Gauge
AEM X-Series Inline Wideband UEGO Controller w/ Bosch wideband O2 sensor 30-0310