chris briggs Posted November 22, 2007 Report Share Posted November 22, 2007 I have a subaru ej25 with dual exhaust an o2 narrow band on each exhaust header. It was tuned with one wideband sensor on the left exhaust side that was temporarily replaced during tuning, but it now has both narrow band on each. I am getting an uneven idle and a rich condition on the other exhaust side. How do i let the two o2sensors control their own sides of the engine. so that they both can be "self-tuned" by the o2 sensors on each exhaust header. I see the wide band selection but i dont see a narrow band selection so to make this possible. Basically one exhaust pipe is black and sooty and the other is not (leaner). I have the stoich selection selected, but how does the computer know which o2 sensor is which?? thanks.Any help is appreciated. Quote Link to comment Share on other sites More sharing options...
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