...that's what the technician and service manager at my dealer told me when I took my GT in to get a steering column noise checked out.
Me to the service manager: "How does a missing airbox silencer make the steering column squeek?!"
Service manager to me: "Well, your PT is the turbo model. (gee, thanks for telling me).... and the turbo sound comes thru the airbox when the piece is missing.... and that may be causing the sound you hear when you turn the wheel."
It's a rubbing sound when turning the wheel at low speeds. (it only happens randomly of course). They couldn't reproduce the sound. They ordered a new airbox and will "see what happens" when it's installed. I'm going to a different dealer with my silencers re-installed. I should have known. [xx(][xx(][xx(]