Ok to remove rear O2?
#3
Wait you mean the post cat o2 sensor? This is not your wbo2 right? I don't believe you had that sensor communicating anything to your ms3 and if it did it should not have been using it for any fuel correction. The post cat o2 is there for measuring the cats effectiveness in obd2 emission strategy. Even in factory settings its not used for fuel correction. I would say your job is done.
#8
Boost Pope
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Definitive answer:
The rear O2 sensor is completely irrelevant to any Megasquirt ECU. Its sole function is to validate the performance of the catalytic converter for the purpose of setting a fault code under OBD-II in order to cause you to fail an emissions test.
(This is one of those rare occasions when I'm not exaggerating at all.)
The forward O2 sensor *may be* relevant to a Megasquirt, depending upon how you have everything wired up. Eg: most commonly a third-party wideband sensor is installed in this position, though a stock narrowband sensor *may* be used in some instances.
But, to recap, the rear O2 sensor is *never* relevant in any Megasquirt install.
The rear O2 sensor is completely irrelevant to any Megasquirt ECU. Its sole function is to validate the performance of the catalytic converter for the purpose of setting a fault code under OBD-II in order to cause you to fail an emissions test.
(This is one of those rare occasions when I'm not exaggerating at all.)
The forward O2 sensor *may be* relevant to a Megasquirt, depending upon how you have everything wired up. Eg: most commonly a third-party wideband sensor is installed in this position, though a stock narrowband sensor *may* be used in some instances.
But, to recap, the rear O2 sensor is *never* relevant in any Megasquirt install.
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