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MazdaSpeed 3/6 - Turbo Induction MazdaSpeed 3/6 - Turbo Induction - Have a turbo, intercooler, downpipe question? Anything turbo related belongs here!


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 Old 05-11-2016, 07:41 AM   #1
 
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Default weird hollow whistling noise

Hey guys I wanted your opinion on something. I have a stock 2006 ms6 and when hitting ~3000rpm I can hear a weird hollow whistling sound that isn't any sound the BPV could make. I'm guessing some sort of boost leak because that's about the range where the turbo kicks in but I'd like to have you guys' opinion too!
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 Old 05-11-2016, 07:44 AM   #2
 
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Are you sure there isn't a bird under your hood?

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 Old 05-11-2016, 07:53 AM   #3
 
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there WAS a bird almost exactly like that one! uncanny. but it's still doing the noise.
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 Old 05-11-2016, 10:40 AM   #4
 
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Easiest thing to do would be to re-tighten everything back to the turbo and see if it still does it. Baby steps.
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 Old 05-11-2016, 10:42 AM   #5
 
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I'm in the process of doing exactly that right now. I'll let you know if I still hear it when I'm done!
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 Old 05-11-2016, 04:55 PM   #6
 
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Aright I went for a drive and it still makes the noise. Took a video, don't know if you can make out the sound, it's pretty faint. Sounds like wind whistling by. Hope it helps!
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File Type: mp4 20160511_173909.mp4 (28.43 MB, 37 views)
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 Old 05-11-2016, 05:13 PM   #7
 
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Listened to it, can't really hear anything, what are your mods?
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 Old 05-11-2016, 05:21 PM   #8
 
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Can't blame you it's not blatantly noticeable even live. I'm all stock.

Also it only happens under load if that helps. I've looked around the forum and this doesn't seem to be a very common thing.

Last edited by Maxdaspeed6; 05-11-2016 at 05:21 PM. Reason: MSF Database - Automerged Doublepost
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 Old 05-12-2016, 06:50 AM   #9
 
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It is your butthole whisteling from the excitement of driving one of the best Mazdas ever made.

Check to see if the previous owner did any weird "mods" to the intake path.
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 Old 05-12-2016, 08:01 AM   #10
 
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I unbolted and rebolted everything up to the turbo twice since the noise started. Everything there is perfectly normal and all the pieces are in good shape, no cracks or holes. Everything from the turbo to the engine looks normal though I never took it apart to inspect. Recently cleaned the EGR and TB but the noise dates from before that.
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 Old 05-12-2016, 08:16 AM   #11
 
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Make a boost leak tester and use it.
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 Old 05-12-2016, 08:19 AM   #12
 
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yup that's what I'm doing next. I'll let you know what I find.
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 Old 05-12-2016, 09:29 AM   #13
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+1 loose butthole whistling
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