S-Class (W220) 1999-2006: S 320 CDI, S 320, S430, S 500, S 600

whine/buzz - loss of power?

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Old Nov 24, 2010 | 07:01 PM
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whine/buzz - loss of power?

Hi all,
At moderate speeds of 15-30 city driving, there's a whining noise at 1500 rpm and up - perhaps more of a hum. I know there's twin turbo...but the sound is louder than before. Anyone have experience w/ that? The sound is definitely louder than before the recent work.
Also, when I'm on hwy going 60mph and I step on the gas, the kickdown that I used to feel that immediately thrusted me to 80mph is gone...feels like regular V12, not TT. Anyone have ideas on these symptoms, and are these 2 related?
Thx, and happy thanksgiving to all.
Patrick
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Old Nov 24, 2010 | 07:32 PM
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