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      06-08-2014, 12:06 AM   #1
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Turbo noise when hard on throttle

Ok, so i just picked up a 2013 F10 M5 and it basically looks brand new. Has 1200 miles on it and i am noticing a slight buzzing noise coming from the turbos when hard on the throttle. Is this normal? Anyone else hearing this? I was thinking of bringing it in and getting it checked but wanted to make sure i wasnt paranoid first as this is my first non NA engine car and i am not familiar with the sounds the turbos should be putting out.
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      06-08-2014, 11:39 AM   #2
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With the windows down when I punch it you can hear the sucking/spooling sound of the turbos. Kind of high pitched, stops as soon as you let up on throttle.
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      06-08-2014, 12:52 PM   #3
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Sounds like you may be hearing the active sound kicking in. Sounds normal aslong as the car is pulling hard you should be fine.
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      06-08-2014, 03:03 PM   #4
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Originally Posted by Netwon View Post
With the windows down when I punch it you can hear the sucking/spooling sound of the turbos. Kind of high pitched, stops as soon as you let up on throttle.

Yes i hear that but i also hear a buzz kind of sound that sounds like it doesnt belong with the sucking noise.
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      06-08-2014, 03:04 PM   #5
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Originally Posted by smithy23 View Post
Sounds like you may be hearing the active sound kicking in. Sounds normal aslong as the car is pulling hard you should be fine.

Active sound? Is there supposed to be a slight buzzing sound.
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      07-01-2014, 08:56 PM   #6
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Anyone getting this buzzing sound? Hear it when the throttle is at medium or higher and with windows down
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      07-02-2014, 11:33 AM   #7
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Probably just turbo spool, wouldn't think its anything to worry about.
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      07-09-2014, 10:15 AM   #8
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I just purchased 13 M5 as well and hear a buzzing,whirring, electrical like noise at low speeds with window down. It is more noticable when the car is cold and seems to dissipate when warm? I took it to service, at first they couldnt hear anything so they eventually made me do a ride along and the sound was very clear. The mechanic said it is normal sound coming from engine? I am not convinced its normal, but whatya do??
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      07-09-2014, 09:08 PM   #9
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Quote:
Originally Posted by DentalBoy View Post
I just purchased 13 M5 as well and hear a buzzing,whirring, electrical like noise at low speeds with window down. It is more noticable when the car is cold and seems to dissipate when warm? I took it to service, at first they couldnt hear anything so they eventually made me do a ride along and the sound was very clear. The mechanic said it is normal sound coming from engine? I am not convinced its normal, but whatya do??
U should get a shop foreman to do a ride along woth you...if we are bith hearing it and the cars are still oulling very hard i doubt we have anything to eorry about...i am going to have them do am engine diagnostic on the car...will keep you posted on what i hear
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      07-09-2014, 09:09 PM   #10
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Anyone else hearing this? Th more the better then i will think its normal
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      07-10-2014, 08:18 AM   #11
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I hear a turbo spooling sound when I boot it, which is normal to me and sounds great too
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      07-10-2014, 09:50 AM   #12
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Quote:
Originally Posted by MPowerrF10 View Post
U should get a shop foreman to do a ride along woth you...if we are bith hearing it and the cars are still oulling very hard i doubt we have anything to eorry about...i am going to have them do am engine diagnostic on the car...will keep you posted on what i hear
Thanks! Look forward to hearing outcome!
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      07-10-2014, 08:01 PM   #13
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Originally Posted by M5essex View Post
I hear a turbo spooling sound when I boot it, which is normal to me and sounds great too
Does it have a buzz to it?
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      07-14-2014, 05:37 AM   #14
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Quote:
Originally Posted by MPowerrF10 View Post
Does it have a buzz to it?
well not so much the engine or turbo, but my centre B&O pop-up speaker gives off a buzzing sound when the engine is under load or at WOT...
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      07-14-2014, 07:31 AM   #15
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Quote:
Originally Posted by M5essex
Quote:
Originally Posted by MPowerrF10 View Post
Does it have a buzz to it?
well not so much the engine or turbo, but my centre B&O pop-up speaker gives off a buzzing sound when the engine is under load or at WOT...
Bad ground or loose connection ? Do you any equipment added to your car like a laser jammer, radar detector or exhaust mister. if they are not grounded properly it could do this.
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      07-14-2014, 10:02 AM   #16
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Quote:
Originally Posted by Spinny02
Quote:
Originally Posted by M5essex
Quote:
Originally Posted by MPowerrF10 View Post
Does it have a buzz to it?
well not so much the engine or turbo, but my centre B&O pop-up speaker gives off a buzzing sound when the engine is under load or at WOT...
Bad ground or loose connection ? Do you any equipment added to your car like a laser jammer, radar detector or exhaust mister. if they are not grounded properly it could do this.
No nothing at all...the buzz is louder now and definitely coming from the engine bay...likely one of the turbos
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      07-14-2014, 10:03 AM   #17
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Quote:
Originally Posted by M5essex
Quote:
Originally Posted by MPowerrF10 View Post
Does it have a buzz to it?
well not so much the engine or turbo, but my centre B&O pop-up speaker gives off a buzzing sound when the engine is under load or at WOT...
nope definitely from the engine
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      07-23-2014, 07:57 PM   #18
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Quote:
Originally Posted by DentalBoy View Post
Thanks! Look forward to hearing outcome!
I havent had a chance to bring the car in...have you had it checked out yet?
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      07-27-2014, 09:57 PM   #19
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Anyone else hearing this?
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      08-07-2014, 04:56 PM   #20
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Quote:
Originally Posted by DentalBoy View Post
I just purchased 13 M5 as well and hear a buzzing,whirring, electrical like noise at low speeds with window down. It is more noticable when the car is cold and seems to dissipate when warm? I took it to service, at first they couldnt hear anything so they eventually made me do a ride along and the sound was very clear. The mechanic said it is normal sound coming from engine? I am not convinced its normal, but whatya do??
You still hearing it? Ever get it checked out?
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      08-14-2014, 12:33 AM   #21
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I find now that this buzzing only comes on around 3k rpms...once i get over 4 0r 5k rpms i just hear the turbo doing work...anyone else experiencing this?
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      09-09-2014, 09:46 AM   #22
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Bmw said the noise is normal from a high performance engine and is not a concern? It does not sound normal to me, It sounds like a bad alternator or?
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