AudiSportB5S4

How many people under light throttle hear a "whoooo" sound... It fluctuates with the throttle.. I have been told that it is the diverter valves doing their magic, I've been told it has to do with your intake setup, which goes back to the diverter valve noise (especially if you are on a piston valve I have been told), and then recently on AZ a few threads have popped up in regards to the transmission which is to blame for the noise... If you DO hear it under light throttle (goes away in boost) is something WRONG... Anyone have some knowledge on that and can shine some light on what's actually going on.

AudiSportB5S4

and to add to it, it seems as if it is more prevalent in the higher gears (4-6th)

SNogaro4

audible unless your coming off the throttle, even then, they should be quiet. A transmission whine doesnt seem normal to me, but Im no expert.

krypt0

it's a gear whine, NOT diverter valves. I have the same sound

AudiSportB5S4

shifts like butter. So, so grateful of that haha

krypt0

Replacing the <i>pinion flange bearing</i> and <i>driveshaft flange bearing</i> (rear of transmission) helped eliminate most of the consistent highway whine (very annoying)

I still hear it sometimes, but its very minor.

However, at certain RPM ranges i have a <b>very</b> loud whine from the front passenger side cv/driveshaft, but goes away quickly.

It's on my huge list of **** to fix...

AudiSportB5S4

is there anything visible that can be checked while on a lift or not really?

Talon Load

I have 103800 on the clock. It shifts fine through all six. I need to call the guy that usually does the work on the difficult stuff on Monday to see what he thinks.

krypt0

This obviously isn't my video, but sounds very similar to how mine was before.<ul><li><a href="http://www.youtube.com/watch?v=bUYbJkfu3EE">http://www.youtube.com/watch?v=bUYbJkfu3EE</a</li></ul>

Talon Load

Mine isn't even close to this loud. If I turn my radio up I can't even hear it. Maybe that's my fix