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Title: ME7.1 lambda control not functioning after downstream 02 delete Post by: vwnut8392 on March 14, 2024, 05:47:30 PM noticed on this B5 S4 im messing with that after i used the info in the S4 wiki to disable the downstream oxygen sensors as the car has no cats and basically numb everything so it will set readiness the ECU no longer uses lambda control at all. when i look at things like fr_w, fr2_w, ushk, ushk2 they all stay 0 no matter what the driving conditions are. if i flash the car back to stock everything acts as it should so the sensors are sensors are not the issue. anyone else ever noticed this? i would prefer the car to keep regulating with lambda control under part throttle conditions to retain some fuel economy.
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