[hunginator]

Not sure if I should be posting this in the Maintenance section so I apologize in advance if so and please move to the correct section.

My car is an E82 135i (N55) with the DCT. I'm at 93,000 miles.

At cold start, I notice a high pitched squealing noise and it gets worse as I apply minimal throttle.

When more throttle is applied, I don't hear it anymore but that could be because I have the BMW PE which may be loud enough to over-power the squealing noise. Also, this seems to disappear after the car starts to reach higher operating temps. I should also note that this noise is even easier to hear when in enclosed car parks.

Does anybody know what the potential issue could be? Also note that I had my belts and tensioner pulley replaced a year ago. Could it be the same issue again?

Thanks in advance.