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      10-21-2020, 02:18 PM   #3
smrtypants44
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Drives: 2017 440i
Join Date: Jul 2015
Location: Tulsa, OK

iTrader: (2)

Are you talking about the splitter (additional piece attached to the bottom of the bumper-usually with glue or double sided tape) or the underbody cladding (large black panels screwed into bottom of bumper)

I hardly imagine a damaged splitter can cause any issues with driving, however if the underbody cladding is not fastened it could cause issues with airflow.
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