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      08-08-2021, 01:54 PM   #2
OtisF80M3
Private First Class
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Drives: F80 M3
Join Date: Jan 2018
Location: Kansas city

iTrader: (0)

Start the car and put it in sport plus mode. When you hear the valves open and exhaust note change. Turn off the car and unplug both exhaust valve plugs. Wrap the plugs up I'm electrical tape and tuck them away. You valves will now be in the open position at all times and modes.
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