Thread: M235i VRSF Catless Downpipe w/o a tune
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      01-23-2023, 10:08 AM   #2
mike@x-ph.com
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Drives: 07-335/12-328/18-M4/21-M4CP
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It will trigger the check engine light, but the car will run fine.

The gains are minimal without a tune, but the sound improvement is noticeable.
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