Quote:
Originally Posted by M135iXdriver
Quote:
Originally Posted by onlyoujames
M5 competition sport exhaust valves supposed to be closed even when you change to Sport and Sport Plus Modes?
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The valves should be open at default when the engine starts, you can push the button to close the valves. When changing to sport or sport+ the valves should open again if closed or remain open if they already were. |
I was wonder why my M5C sounds very muffled! Will send it to my dealer and have them checked.