"whistling" sound when accelerating

hello

i have a small problem

since I was on the race track (probably has nothing to do with it),
I have a strange "whistling" sound when I accelerate. (no, its not the sound of CAI.)

man hears it constantly when i stay on the gas pedal.

The car runs absolutely normal and has no performance penalty.
I have the JLT CAI.

Does anyone have any idea what that could be ?