Chattering...

[dan_b]

I can hear the turbo whistling too when it's spinning up, but yes the noise is exactly as Gandalf describes. I am getting used to it, but it still feels a bit boy-racer-ish!

[Pete_RS2]

I've noticed my RS2 "chatters" when lifting off/changing gear. Sounds pretty cool actually Does this mean the DV is healthy & doing it's job ? I didn't get the noise on my old S2...

[audiman]

DV valve is leaking internally Peter, thats what happened to my old one, was causing an internal boost leak. Worth changing it, maybe for a forge one or even an S3 one would be better than stock and only 18 quid

[Pete_RS2]

Cheers Tom. I've just ordered an S3 one from VAG Parts. What's the benefit of the S3 one ?

[audiman]

Its cheaper and the spring inside is stiffer than a stock one. Im not sure entirely about the pros of it. I was just told by Mihnea to use it on my car. He did explain it to me, but i wasnt listening to him.

[DAVIDP20V]

you beat me to it tom !

Yea that chattering, group "a" type dump valve noise is a fooked dv. although the dv looked all ok (no cracks, holes and the diapraghm was sealing !)
My car started doing it a couple of weeks ago i have now upgraded to a Forge fmdv006 for around £90 + vat , and now it is back to the normal whoosh when i let off the throttle.

But i still has what sounds like a boost leak under the dash @ full boost, i think the boost gauge cheap piping has split ?!?

[audiman]

boost leak under the dash

Bet thats the throttle body rubber hose split. They break right on the edge of the hose clips. Normally underneath where you cant see it. Have a look then order the samcos

[Pete_RS2]

LOL. I dumped the hard piping that came with the fitting kit & replaced it with some nice SFS silicone.