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    Technical 550i O2 sensor for single turbo

    This sensor recommendation is unverified, proceed at your own risk. Lately I've been hearing through the facebook grapevine of 550i O2 sensors being recommended for single turbo use. Then someone else told me they are the same as ADV, but I'm not sold on that claim. Realoem indicates they are...
    • veer90
    • Thread
    • 550i fuel lambda o2 sensor single turbo
    • Replies: 12
    • Forum: N54
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