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      08-28-2020, 08:20 AM   #1
Seani89
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Which valve for louder exhaust?

Has anyone managed to figure out which valves in the exhaust can be permanently left open to make the exhaust sound better?

I did this on my M2, just unplugged one of the valves when it was open and it made a difference to the overall exhaust noise.

Is this possible on the Z4 M40i?

Thanks
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