We have produced the world's first EFIE that is designed specifically for use with wide band oxygen sensors. It will work with all types of wide band and AFR (Air/Fuel Ratio) sensors. To be clear, it is the EFIE of choice for both 4-wire and 5-wire oxygen sensors. Also note there is a variation of the 5-wire sensor that uses 6 wires. This device will work with these too. Please note, it will NOT work with narrow band sensors. For these, you must use any of our other EFIE product lines, such as the Dual EFIE Deluxe.
Note that this product is only available in a dual configuration at this time. This means that this device will control 2 wide band oxygen sensors. For vehicles with single wide band oxygen sensors, just don't hook up the other circuit.
This model comes in a mountable box, and encased in protective plastic. The wiring is 18 gauge, with quick disconnects that can unplug from the device for easy installation. It has one potentiometer that controls the air fuel ratio adjustment for both sensors. An LED shows when the unit is powered up. By using the included rubber cap to cover the potentiometer, the unit becomes waterproof.
These units have a start up delay of about 45 seconds. After approximately 25 seconds the unit will start ramping up. At 45 secs it will reach it's full adjustment to the sensor's signal. This delay is by design so that the fuel mix will be richer during engine start up.
This unit is highly precise. It's signal drift is less than 1% across it's entire operating temperature range, which is -40C to 125C (-40F to 257F). Note that the electronics can get that hot, but the casing will start getting soft at 90C (194F). "C" = degrees Celsius and "F" = degrees Fahrenheit.
