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Charlie,
The O2 sensor outputs a voltage but very little current. That would make it difficult to bias it in a predictable way. Biasing a buffered output such as a wideband O2 unit output would probably work.
Steve Boese
Any reason (other than the need to run 'closed loop' all the time) to not use a bias voltage added/subtracted from the O2 sensor output, to control mixture?
Charlie
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