mgf weird sound

Hello to all...

I hear lately a weird hissing/whistling (the two combined) sound which seems to be coming from under handbrake and back to the arm rest.

The sound is only heard when cold and at low revs (2nd gear mostly).

There is nothing producing this sound in the arm rest as i checked. But the sound definitely comes from inside the car.

(The radiator pipes under the car have been replaced ... they do not have to do with the sound)



Any thoughts ?



Regards

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