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Whistling when revving


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10 replies to this topic

#1 The Situation

The Situation
  • LocationEast London
  • Occupation:Project Manager
  • Current Car:2007 BMW 525d M Sport LCi 2993cc

Posted 07 February 2012 - 05:19 PM

Has anyone ever come across a whistling kind of sound from engine bay when revving???

Should I be worried would be the next question????

#2 Del Boy

Del Boy
  • LocationUK
  • Current Car:2012 F10 520d SE Auto

Posted 07 February 2012 - 07:12 PM

Turbo, no you shouldn't be worried :).

Drives: 2013 (63) LCI BMW 520d M Sport Auto - Jet Black. 2011 (61) BMW 520d SE Auto - Jet Black.


#3 The Situation

The Situation
  • LocationEast London
  • Occupation:Project Manager
  • Current Car:2007 BMW 525d M Sport LCi 2993cc

Posted 07 February 2012 - 08:43 PM

Cheers Del Boy.



#4 Blobby

Blobby
  • LocationEast Sussex
  • Occupation:Electrical Engineer
  • Current Car:535d e61 LCi 2007 M Sport

Posted 07 February 2012 - 09:05 PM

Take your DPF off then you'll hear some whistling

535d e61 LCi 2007 M Sport (DPF&EGR delete Maximap Ecotune) 365bhp & 560lb/ft / 760NM

K1300R. Can beat most cars to 100 so who needs a remap and a tinbox to have fun.. :D


#5 The Situation

The Situation
  • LocationEast London
  • Occupation:Project Manager
  • Current Car:2007 BMW 525d M Sport LCi 2993cc

Posted 07 February 2012 - 09:50 PM

I would love to take it off as I only do multiple short stop/start journeys in inner London which is a killer for the DPF, but anyone tell me the pros & cons and more importantly how much on average for removal remap etc?

#6 Blobby

Blobby
  • LocationEast Sussex
  • Occupation:Electrical Engineer
  • Current Car:535d e61 LCi 2007 M Sport

Posted 08 February 2012 - 10:04 PM

Ecotune is £865, for the bits which includes two maps, although this does not include labour price for DPF removal. Although I bet there are a load of people in East london who can do it.

535d e61 LCi 2007 M Sport (DPF&EGR delete Maximap Ecotune) 365bhp & 560lb/ft / 760NM

K1300R. Can beat most cars to 100 so who needs a remap and a tinbox to have fun.. :D


#7 baus

baus
  • Current Car:05 E60 525d Auto, Fully Loaded

Posted 09 February 2012 - 04:36 AM

It's not whistling like this is it?



#8 The Situation

The Situation
  • LocationEast London
  • Occupation:Project Manager
  • Current Car:2007 BMW 525d M Sport LCi 2993cc

Posted 09 February 2012 - 12:37 PM

Baus
No luckily my whistling noise sounds a lot nicer and after what Del Boy said, does sound turbo-esque!!!
I take it your example is of one that is causing a problem???
I still my BMW warranty up until August this year and so was not overly worried but still would have been a stress!!

#9 Del Boy

Del Boy
  • LocationUK
  • Current Car:2012 F10 520d SE Auto

Posted 09 February 2012 - 04:07 PM

Yeah the one of the video clearly had a problem, a little whistle is perfectly normal. A lot of people are lead to believe any turbo whistle means its knackered, completely wrong. When you've got air spinning at thousands of rpm it'll make a noise. Think of how wind whistles at 80 mph.

Drives: 2013 (63) LCI BMW 520d M Sport Auto - Jet Black. 2011 (61) BMW 520d SE Auto - Jet Black.


#10 memyself

memyself

Posted 09 February 2012 - 04:43 PM

Might be a warped AC fan blade, that runs constantly while the engine is running, they sometimes warp a plastic blade out of shape and whistle a bit.

I once had this problem...it was cured by the blade coming of at 80mph on the motorway, throwing lot's of plastic down the road, but not much other damage around the engine / bonnet...blumin pleased it was a plastic blade not a metal one.

#11 Blobby

Blobby
  • LocationEast Sussex
  • Occupation:Electrical Engineer
  • Current Car:535d e61 LCi 2007 M Sport

Posted 09 February 2012 - 06:25 PM

Since the removal of my DPF the small turbo sounds like it's going to explode on small throttle settings.

535d e61 LCi 2007 M Sport (DPF&EGR delete Maximap Ecotune) 365bhp & 560lb/ft / 760NM

K1300R. Can beat most cars to 100 so who needs a remap and a tinbox to have fun.. :D





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