New Murano whistle sound

Hi
上星期六回原廠做了1000公里的保養，順便跟原廠反應了在轉速RPM約1200轉時，會有咻咻聲音，並將國外的使用者及原廠的技術公報給他們看，http://forums.nicoclub.com/zerothread?id=334667&page=1。原本以為是與之前進氣岐管材質鬆脫（2004.9.1.-2007.12.3)的問題是相同的，不過經過原廠檢查，我的已經是更換成新的材質了（2008.8出廠）。所以，這算是另外的問題。下面為美國的技術公報，有提到如何調整來解決這個聲音，不過，去的那家保養廠似乎還沒收到這樣的技術維修公報。不知有其他的車主有修過這樣的問題嗎？維修廠是有跟我說要跟總公司反應看看！等待中....

NTB08104
IF YOU CONFIRM A whistle noise coming from the engine during light acceleration, ACTIONS Unbolt but do not remove the electric throttle control actuator. Replace the actuator gasket. Reposition the actuator on the manifold and secure following the instructions in this Service Procedure. NOTE: The repair of this issue, if it should occur, is the repositioning of the actuator not the replacement of the gasket. The gasket is replaced because the actuator is being unbolted from the manifold.

BR

Sidney
2009 New Murano