I fixxed this by opening the air intake box, reseating the filter, and properly latching it back.
However, I took it back into the stealer for an oil change and was very precise, "Just the oil change."
As I'm driving away the infamous whistling noise started back up. Bastards messed with the air filter.
And Versace - no it only happened when car is running. I hear the same noise as you, its coming from the back left? I believe that problem was addressed in a previous thread, I am not sure which one. I believe someone wrote that there is a secondary valve that closes near your muffler when you shut off motor? Something along those lines. Nothing to be worried about.
2001 BMW 325XI, 60k miles
1993 Ford Ranger, 200k miles
1995 Ford Escort
1991 Ford Mustang
1986 Ford Taurus
1978 Pontiac Firebird