Connect to oxygen sensor and determine whether the engine is running rich or lean for maximum performance efficiency

Dual display offers independent or dual left/right bank vs. inline readings

Color LEDs provide a quick visual display of air/fuel ratio

Aluminum bezel is lightweight and optimizes appearance

Useful for tuning carbureted and fuel injected engines

Rear twist-on ring mount design makes mounting simple

Includes electrical connectors for installation on most vehicles foreign and domestic