Fwd: RE: [BiturboS4] Turbo whine

[adamschwartz at rcn.com]

Hello,
I was actually about to write this same e-mail. My S4, 60k
miles, APR chip, no other mods.. is doing the same thing.
When its very cold I get a fairly loud whine. No errors, no
power loss. I was guessing that it was my DV. Maybe the
rubber is more stiff in the cold?

I dont think there is anyhting really wrong, as the car is
performing as it should. But maybe its a sign of things to
come??

If you have the Forge DV, isnt that serviceable? Maybe you
could open yours and re-oil them. See if that makes a
difference?


And how cold is cold? Last night it was about 4 degrees F.
here when I got in the car.

Cheers,

A






>
>This is a multi-part message in MIME format.
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>[ Picked text/plain from multipart/alternative ]
>I have a 2001 S4 Avant with 79k miles and I drive it
extremely hard. I
>had an APR chip installed at 10k miles, APR Bi pipe, and
Forge diverter
>valves. I have always been cautious warming up and cooling
down but
>recently I developed a whine when the turbos spool up and
it's really
>pronounced when it's cold. I have not experienced a loss in
power and
>wondering if it might be a loose heat shield. In addition, I
don't see
>any fault codes with my vag-com. Does anyone know what it
might be? If
>it is my turbos, it looks like I have to step up to the RS4
set up. TIA
>
>Regards,
>Brock Campbell
>
>
>
>
>--
>
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