Mine has gear whine in first and 2nd but after that I can't really hear it. Flaps are only open in race as far as I know.
My 6MT makes the gear whine sound in 2 and 3 gears. It is faint enough that I can only hear it when radio is off. Starts around 2000 rpm and can hear it up to about 3500 rpm.
I assumed it is the turbo. Is it something else?