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is anyone getting this harmonic "hoo" sound in their GR's?
is anyone getting this harmonic "hoo" sound in their GR's?
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Old 08-30-18, 10:41 AM   #1
crick0234
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Default is anyone getting this harmonic "hoo" sound in their GR's?

i'm at 125K miles on my 2012 STi, more miles than an average STi of this year. Just yesturday i started developing this weird "hoooooooooooooo" sound that seems to hit above 50mph and at light throttle. goes away with acceleration and nonexistant in slower speeds.

in fact, sounds *EXXXAACTLYYYY* like this video:

2004 STI whining humming sound - YouTube

the "hoo" starts at 15 seconds, but comes on just and goes away just like that video. I read that it was a harmonic 'hoo' that subaru has a TSB on for 03-04 subies. havent seen anything on GR's

Anyone run into this same sound? I'll check for any 'wheel bearing' issues, but a lot of the wheel bearing vids sounds nothing like that video.

currently running Motul 300 75w90 for front and rear diffs. brake pads a little low, but dont think that would make this sound.
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Old 08-30-18, 03:06 PM   #2
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Default Re: is anyone getting this harmonic "hoo" sound in their GR's?

Turbo - normal - I miss it

Added: I don't miss stock wastegate rasp
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Last edited by mheyman; 08-31-18 at 03:40 AM.
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