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Re: Question About " Open Loop "
WBO2 systems pretty much never ignore the sensor, and its always in closed loop, decel, WOT etc. The only time they aren't in closed loop is for the first 10 or 20 seconds of a cold start, which is how long it takes for the sensor to heat up.
For NBO2's, with a heater circuit (3 and 4 wire) they pretty much follow your list of when they are open. Non-heater (1 and 2 wire) are less reliable at idle and usually are either ignored....for the most part
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Three turbo'd motorcycles and counting.
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