Bimmerfest - BMW Forums - View Single Post - Easy way of opening exhaust valve on a 550i
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Old 04-24-2012, 08:02 PM
tek2tirado tek2tirado is offline
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Location: phx
Join Date: Feb 2012
Posts: 59
Mein Auto: civic /06 550i
ne one have a video or audio of this trick?
i am very disappointed on the way my 550 sounds
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