Quote:
Originally Posted by Obioban
Yes, that's the fundamental lack of understanding I was referring to-- the engine can't begin to properly run without precat 02 sensors. That you thought turning them off was an option shows exactly what level of knowledge you're coming into this with (what company the tune is coming from has nothing to do with this whatsoever-- the engine must have pre cat O2 sensor readings to function).
Yes, your car was thowing a rich code in one bank before. That was the beginning of your sensor failing, not a tune issue and not caused by the tune-- the ecu CAN'T be tuned to run richer in one bank than the other.
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I'd read in several threads that they shut both off. That is also why I was confused & why I asked the question. After communicating with Karl from Active he answered my question.
I'm referring to the data logged not the code thrown from the failing 02.