I have a doozie for you guys... I've been living with this over the past few years... I drive highway in my daily commute to work and every time I reach 55mph I start to hear a whining coming from my rear passenger side (around the tank area). It slowly increases in volume as I speed up then slowly fades away to nothing once I get to 70mph. It hasn't affected my performance but I can never figure out what it is. I'm guessing it has something to do with my fuel pump. Any ideas??