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This is the most advanced EFIE for O2 sensors in the market.
It will address up to four sensors: two in the front and two in the back.
The front sensors are adjusted by two potentiometers: DIGITAL and ADAPTIVE.
The rear sensors are ADJUSTED by the ANALOG potentiometer.
Compatible with all other quad EFIE in the market (DIGITAL and ANALOG potentiometer).
This unit will give more control with the ADAPTIVE function.