I had an extremely poor idle, and thanks to the below threads diagnosed it to a failed PCV valve. However, on the 3.2 VR6, the PCV arrangement is under the valve cover. Which is under the inlet manifold. Which can't be removed without sliding forward the slam panel. Which can't be done unless you remove the bumper... Anyway, I read the following threads: http://www.audi-sport.net/vb/a3-s3-...phragm-whistling-sound-hole-rocker-cover.html VWVortex.com - Valve Cover problems on MKV R32 My PCV valve replacement on Audi A3 3.2, aka shoot me in the face please and with a bit of help from this thread: VWVortex.com - TT 3.2 Schrick 268 Cams Install saved myself 8 hours labour or so at a garage and fixed it. Simple steps (from memory): Remove undertray Remove wheels Undo wheelarch screws Undo front bumper screws and nut Undo 3 screws on top of bumper Pull out bumper Disconnect headlamp washer tube Disconnect foglight connectors Disconnect lower coolant hose guide Remove 8x impact bumper bolts Insert 4x long bolts in top holes Remove 3x vertical screws by headlights Pull front slam panel out slightly to check movement OK Remove all coilpack plugs Remove all coilpacks Take out air intake feed Remove throttle body Remove manifold bolts at side Remove all vacuum hoses on manifold Remove performance port changeover barrel end-piece Remove/move all wires connected to manifold Remove 2x bolts holding dipstick guide in Remove 9x bolts on front of manifold Remove manifold Undo all vertical bolts on cam cover (and 2 nuts) Undo anything connected to cam cover Remove valve cover Remove PCV valve from valve cover (torx screws, then lever out) Remove circular cap from PCV assembly Inspect rubber diaphragm Replace rubber diaphragm! Pics (click for larger): The bolts I used to move the slam panel ("lock carrier to service position" in VAG parlance): Halfway stage: All the bolts removed: Cover off: PCV valve/oil separator assembly: The innocent looking bit of rubber: And the reason for the whole business - the whole thing was very perished: And to quote Haynes - "Assembly is the reverse of disassembly"! As mentioned, although the PCV/cyclone assembly has a part number (022 103 515 A), it does;t seem to be available separately. However, I can confirm that the rubber diaphragm in the 2.0 TFSI PCV (06F 129 101 N) fits and works perfectly. Many thanks especially to the user VagPro on this forum. This is not a difficult task, just a bit of a pain - I am very much an amateur and it took me about 7 hours all in, not rushing at all. However, I had all the tools needed and a workshop to use with a lift! Any questions, please ask.