does this sound like either going bad maf or pre cat 02 sensor acting up.
today while driving got p2098 bank-2 and p1093-bank-2
one minute lean then the other minute rich.i erase the codes but they came on again maybe an fuel injector also acting up i put in a can of techtron to see if it help.

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4/02 x5 3.0i AUTO BLACK
KISSIMMEE FL