Not Ranked
Dennis,
As Gaz64 stated, it's a wideband 02 meter that measures the airfuel ratio of the engine. I bought the NGK AFX meter and velcroed the gauge/control box to the bottom edge of my dash. The large LED readout is easy to see and allows me to monitor my air fuel ratio under all conditions. The o2 sensor is installed at the collector on the passengers side sidepipe. I can easily remove the system and just use the supplied plug for the sidepipe.
It's easy to use, accurate and works great!
Tom
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