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Test AEM UEGO and Innovate MTX L APSX WIDEBAND D2 AFR and B2 Boost Gauge Combo Kit by APSX WIDEBAND 2 years ago 4 minutes 33 seconds 20 195 views Test AEM UEGO and Innovate MTX L APSX WIDEBAND D2 AFR and B2 Boost Gauge Combo Kit

Aem 30-4900 digital wideband uego air/fuel boost gauge failsafe all-in-one new running rich (very low air/fuel ratio, excessive fuel) can cause a loss in power and fuel economy, while running too lean (very high air/fuel ratio, not enough fuel) may result in serious engine damage.