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..::PSI::.. - X3M/X4M PSI Midpipe Overview!
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05-01-2022, 07:57 AM
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AndrewC1989
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Drives: 2015 328d xDrive
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2015 328d xDrive
[8.90]
Sounds great with the valves open, not so much when they're closed. Wish it was more muffled when shut.
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