O2 sensor pullup resistor values?

[Peter Florance]

Anyone have any idea of typical ECU pullup resistor (to ~ .45V)  values for
O2 sensors inputs? I'm trying to make a analog circuit to average 2 sensors
for my L-jet box and would like to incorporate it in the front end of the
buffers.
Also interested in any comments regarding averaging O2 sensors for dual
exhaust systems and idle performance (in line 6 engine)
Thanks in advance

Peter Florance
81 euro 528i w/ 3.5L




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