AEM X-Series OBDII Wideband UEGO AFR Sensor Controller Gauge

AEM X-Series OBDII Wideband UEGO AFR Sensor Controller Gauge

Marsoni

M251S

$137.62

Get it in 3 business days with 1 day shipping. Friday, May 29

AEM X-Series OBDII Wideband UEGO AFR Sensor Controller GaugeAccurate AFR data is critical when tuning an engine. Running rich (very low air fuel ratio, excessive fuel) can cause a loss in power, while running too lean (very high air fuel ratio, not enough fuel) may result in serious engine damage. Using a wideband air fuel controller during the tuning process allows you to monitor AFR and adjust tuning parameters to optimize them for maximum power and efficiency. AEM has a comprehensive line of highly

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Reviewed in the United States on November 18, 2025