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04-14-2015, 07:40 PM | #1 |
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Cracked Charge Pipe?
So I've noticed I get this high pitched whistling sound at or near WOT only mods are BMS intake and exhaust. Thought the whistling could be from the charge pipe has a leak or maybe something with the BOV but I'm not running extra boost. Car is a 2011 with 13k miles on it.
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04-14-2015, 07:49 PM | #2 |
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Are you getting any codes thrown?
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04-14-2015, 08:08 PM | #3 | |
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Can you hear it in the cabin with windows up? Where does it sound like it's coming from. Does it whistle in neutral.
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04-14-2015, 08:19 PM | #4 |
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The BMS intake will make an odd high pitched noise at times at WOT.. Mine does it, and a friends E90 also did it when the intake was installed. I've heard it on a few others as well. I recommend installing stock intake first and see if the noise is still there.
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04-14-2015, 09:12 PM | #5 | |
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I hope thats it... Very annoying |
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04-14-2015, 09:30 PM | #6 |
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Agree. Even worse if the odd BMS "cowl delete" is installed..
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