"Fuel Economy Modification" for xBs?
omg 4mpg less waaa
there is no way to reprogram our ecu's .
you can disconnect the battery and let the ecu learn all over again and that may net you a few more mpg
there is no way to reprogram our ecu's .
you can disconnect the battery and let the ecu learn all over again and that may net you a few more mpg
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