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2016 640i m sport gran coupe exhaust flap
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05-02-2022, 06:06 PM
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RJV3
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Drives: 17 F06 Gran Coupe/ 16 F10 535
Join Date: Mar 2020
Location: NY
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Anyone know how the exhaust flap on the LCI 640 work? Meaning can I retrofit m6 comp mufflers and still retain the valve function? Maybe even run a "Y" line to the muffler on the left to get that valve going?
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