Hi everybody. I have some problems with my lambda sensors. In the beginning I had errors a both upstream o2 sensors, I bought new Bosch sensors and now the car runs more bad than before and I still have errors on lambda 1 before catalyst. I replaced also the sparkplugs, the coils are fine and the injectors has randomly high values but everyday is a different one so I would say that they are fine. How I check the wires or what should I do next? Is about an e92, 325xi 3.0i n53 Thank you!
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