Digital Air/Fuel Ratio Meter (out of stock / discontinued product)

We have new high resolution Air/Fuel Ratio Meters in stock. They display the oxygen sensor voltage with much needed 0.01V accuracy. They feature easy to see, large bright red LED display. This meter measures voltage up to 19.99V and can be used to display a battery voltage to keep an eye on the charging system. Our Air Fuel Ratio Meter is very compact and can be mounted almost anywhere in the dash.

The AFR Meter is available at a price of $75, the best deal you can find!

Or send an e-mail to sales@zeitronix.com

Click HERE for additional information about the Oxygen Sensor operation and tuning tips.

Stock narrow band O2 sensor is temperature dependent. If you are running closer to the edge and looking for fast responding and temperature compensated air/fuel ratio measurements you may want to look into the Wide Band Air Fuel Meter. Click here for Wide Band details.

Installation instructions

1G DSM and Galant VR-4

Installation involves tapping into three wires: +12V, GND and the O2 sensor output.

1G DSM ECU connector.

The pin numbers are shown as looking at the ECU plug NOT  the wiring harness connector.

Click HERE for ECU removal instructions.

2G DSM

Installation involves tapping into three wires: +12V, GND and the O2 sensor output.

2G DSM ECU connector.

The pin numbers are shown as looking at the ECU plug NOT the wiring harness connector.