i was driving back home today and i started hearing this whining noise in my car. its a pretty quiet noise but its still audible. pretty much as my rpms go up the whining noise gets louder and if my rpms start to drop the noise gets quieter. it sounds like a really quiet ball bearing turbo spooling when i give it gas but its not. i was thinking it had something to do with my a/c because its the first time ive used it in a while so i tried turning it off and it got quieter but its still there. ive searched and heard it could be the t case but i dont think its that serious and as loud as a t case whine. anyone have this before.