I just got my b16a1 about to months ago, for the first month and 1/2 i had a hesitation problem with the oxygen sensors being switched, i would to have to give it about 20% throttle for it to stop hesitating. After i fixed that i've been noticing this faint whine between 35 and 52 mph, its the loudest at about 10% throttle, but sounds like it goes away when i floor it, it will do it if i'm in neutral or in any gear, as long as im between 35 and 52mph. I have not clue what it could be and if i should be worried any suggestions would be great.