I thought about attaching this to the most recent whistle thread, but my symptoms are slightly different. I have had a light whistle noise that started within the last month (around 9.5K) and have had no luck figuring out what it is. It seems to be slightly load dependent, most prevelent at around 2800 in second gear and 3200 in third gear, when just pushing the pedal-almost just curling your toes-it makes a whistle noise very similar to an extremely high pitched brake sqeal or a poorly ground radio. I took it to the dealer and duplicated it for one of the service managers. (This took awhile because it is easiest to hear bouncing off other objects, and none where available-but he did say he heard it once.) Well, they checked the trans vib. damperner bolts and said they were tight. In fact, they thought everything looked fine. In addition, the tech could not duplicate the noise either, so they gave it back with the old, "If it gets worse bring it back." OOKKKK.... As soon as I pulled out, it did it again. This is not a big deal, but it sure would be nice to have some closure on this. Any thoughts? No, the HVAC settings do not have any impact. Any direction would be welcome. I guess it is time for the REVi intake and RP Cat to make the car loud enough to make this sound go away.

 

Have the same whistle and I have the REVi and can still hear it. Time to get to the dealer again.

 

I am starting to think maybe I have a loose cat shield. It also occurs under certain 2-3 shifts (during load transfer). Probably, one of those noises that will remain until I chance upon it by replacing the parts

 

Do a search the rotary makes a whistle. It's normal. BUt if its real loud, please check it out.
Check the issues forum.

I doubt you find any dealer willing to consistently run the car at 9,500 RPM to hear a whistle.