when my car is going faster than 5 mph it will start making a noise that sounds like an airplane and just gets louder as i go faster, when i am at 80 mph and let off the gas and shift to neutral and let the rpms get to 700, the noise sounds like somthing could be grinding. i removed the stock airbox and dont know if that could be part of the cause of it.
is it a loud howling noise.......maybe wheel bearing