I just noticed today whenever I step on the gas the engine makes a high pitch humm (I can't really describe the sound). Sorta like when the V-Tec kicks in. Do you guys have any idea if that is normal?I searched the forum but I can't find any answer. Thank you

 

You haven't searched hard enough. Try keywords such as "Whistle", & "whirring".

Many of us share the same problem you have, but it really isn't a "problem", so don't lose sleep.

 

Just one of the "traits" of the car.

 

Thank you

 

i have the same thing too, i think it has something to do with the drive-by-wire system