Does anyone know the tuning differences between the M4 and M5? While essentially the same the factory documents say that the M4 was tuned for a sportier ride.
As I have the head off my M5 I wonder if I could do something besides polishing for airflow?
Thanks in advance.
1929 M4 and M5 tuning differences
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Angelo
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- Location: Carmarthenshire UK
1929 M4 and M5 tuning differences
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