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· Cereal Killer
20,993 Posts
The uncertainty boils down to what the ECM does with the air fuel ratio readings at WOT. Is this sensor in fact a true wideband sensor which can maintain closed loop at WOT (albeit with an AFR richer that stoichiometric) or does the ECM still ignore O2 sensor readings at WOT as is done with old school narrow band O2. :dunno:
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