Battery connected or not, those o2s don't like the vibrations from the impact. You may be fine. But if you get weird values when you're tuning, keep them in mind and replace if needed.
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2011 MB Touring-Sport-6sp-Nav/GTM TT/FI TT TDX/JTran/Kosmic/Eibach/Hotchkis/SPC/CSF/RPS/SoThatsWhereAllMyMoneyWent
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