I have owned the TD6 L322 for about 18 months and ever since I have had it I have heard a whistling whoosh sound every time I lift my foot off the accelerator. It's not particularly loud, I only really hear it when I have the window open and my passengers never claim to be able to hear it, but it's definitely there. Is this normal, and if not, what could it be. It sounds like I have the smallest, quietest dump valve ever invented.  RR History
1988 2.4td Classic 1999 to 2020
1992 3.9efi Westminster Classic 2004-2005
2005MY L322 3.0TD6 Vogue 2016 to current

Yup mine's always done the same. Normal I believe. 2004 Vogue TD6 - Remapped
2008 Porsche Cayenne S
1998 Lotus Elise

It's a sigh of relief from the engine.  John
2008 Stornoway Grey 3.6 Tdv8 Vogue
2005 TD6 Java Black Vogue - Written off!!
GAP iiD BT
2003 Discovery TD5 Auto, Nanocom Evolution - gone to a new home!
MasseyFerguson 152 - No electronics!! - Sold

The TD6 goes into limp mode at the slightest whiff of turbo trouble so if it’s goung ok then alls well, it’s the whoosh when you accelerate that you have to worry about.

Thanks all, that's one less thing to worry about. The list is still plenty long enough though  RR History
1988 2.4td Classic 1999 to 2020
1992 3.9efi Westminster Classic 2004-2005
2005MY L322 3.0TD6 Vogue 2016 to current