S4 / RS4 (B5 Platform) Discussion Discussion forum for the B5 Audi S4 & RS4 produced from 1998-2002

Does your rs6 turbos whine?

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Old Mar 31, 2010 | 09:50 PM
  #1  
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Default Does your rs6 turbos whine?

My rs6 turbos whine a bit, is this normal?
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Old Apr 1, 2010 | 05:37 AM
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yup, it's normal - the bigger the turbo the more noticiable the spooling noise becomes.
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Old Apr 1, 2010 | 07:04 AM
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And with undersized (for the size of turbo) OEM piping between turbo and intake manifold, the air velocity is higher and causes additional whistling over any sharp transitions.

The OEM piping for RS6 turbo is much larger than the one we re-use in our cars. Whistling is not present in RS6 as the piping allows for air to travel at a velocity that doesn't cause whistling.
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Old Apr 1, 2010 | 08:34 AM
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whine =! whistle
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Old Apr 1, 2010 | 11:24 AM
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Ok, we might be splitting hairs a bit...

I think what OP is really saying is "OMG HALP! My turboz is dying1!!?1?"

and I think all he wanted was a reassurance that, no - they are operating normally. Call off the red-alert, etc.

The sound that a properly operating turbo makes depends on a host of factors, including the size and type of turbo, the piping, and other components of the system. The main thing that needs to be pointed out is that an audibly failing turbo can not be mistaken for a properly operating one - you will know if the sounds it is making indicates failure.
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