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4.4 whistling
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  1. X5 E53 (1999 - 2006)
    Hi all, I have just purchased a 2005 BMW X5 4.4i couple weeks ago and the car runs great, but there is two things that are bothering me since day one. First is the whistling noise that seems to be coming from some hose I guess, see video on youtube here: whistling can be heard best from...
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