The discussion was weather you could have the WBo2 sensor installed permantly or if that would damage it. I found this information on the subject of Bosch sensors:
"The heart of the Performance Trends Wideband controller is the Bosch LSU4.2 Universal Exhaust Gas Oxygen (UEGO) sensor. This type of sensor is commonly referred to as “laboratory grade” and works on a different principle than the normal oxygen sensor you would find in your car. Its unique design makes precision AFR measurement possible over the entire operating range.
UEGO type sensors use a “current pump” within the sensor itself to determine the actual oxygen concentration within the sensing element or, lacking any O2, it determines the amount of oxygen required to regain stoichiometric operation. The output is in the form of a very small current which varies depending on the air-fuel ratio. This is completely different from a normal oxygen sensor (1, 2 and 4 wire types) which directly output a voltage. The UEGO design allows measurement of the exact air fuel ratio over the entire operating range.
Each Performance Trends UEGO sensor is individually calibrated and a resistor integral to the connector body is laser trimmed with this value. This process replaces the traditional “free air” calibration procedure when changing sensors and implements a sensor specific calibration for unparalleled accuracy."
Nicked from http://www.performancetrends.com/wide_band_uego.htm
So I guess the early aftermarket sensors are more sensitive and must be calibrated every startup.
I found this because I was wondering what the h3ll that little thing was on the connector on the sensor I have laying around...
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