Originally posted by Roger R:
After getting my true duals installed I too noticed a whinning sound, and it does sound like a turbo, kinda 
:p it did that b4 i put my exhaste done. now it just got louder. im telling u if u were to drive next to me u would think i have something under the hood. but i dont. and seems like its coming from under the car. i can hear it really well when i have windows open and when there is stuff next to me.
