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Weird humming/"mooing" sound from exhaust side of engine? Got a video.
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12-19-2012, 02:50 PM
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Dackelone
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Might be your wastegate vacum actuator(s) ? The DME adjusts the duty cycle at these actuators to control boost and spool up response.
I would go consult with your dealer, since you have this video to show them.
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