Quote:
Originally Posted by Pacer1723
anybody has experience with replacing the full exhaust system in 640i factory series exhaust to the M6 2014? Will it work? im worried about opening and closing the flaps...
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Y do the full exhaust? You can do just the mufflers and wire tie the flaps open if u choose too Or u can do one side or just leave them closed .. I'm running m6 mufflers on my 640 with both flaps open . Sound great on sports mode but has some drone in lower rpms . I definitely don't regret making the switch