Thread: What is causing my X5 3.0 to whistle during acceleration? past basic troubleshooting
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Old 03-23-2010, 09:20 AM
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sethro sethro is offline
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That whistling sound you are hearing is a common issue with I-6 BMW's its most likely an intake boot leak. I actually have the same whistling it usually kicks in at about 1,800-2,000RPM range. Sounds like a supercharger
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