My emira lets out a high pitched whistle when I lightly press upon the gas pedal. What is this?

[rowenofpts]

Sort of sounds like squeaking brakes (but obviously is not since I’m not braking). It is ONLY when I’m lightly pressing on the gas. It disappears once I press a bit more. It is 100% of the time, does not come and go.

Anyone else hearing this sound at light throttle?

 

[allenyao09]

Do you have an aftermarket intake air filter? I think I might be hearing the same whistle coming from the air intake.

 

[silent cilantro]

Mine does the same. Did it with factory intake and still does it with Eventuri. The solution is to go WOT all the time

 

[L0tusExigeS]

Mine does the same, only while in gear interestingly, not if I rev. Just around 3K rpm. Noticeable with the window open. If anyone knows a remedy, I would be quite keen to know