I am wondering what could be wrong with my car. It is all of the sudden very loud when I accelerate and seriously sounds like a friends v6 mustang with upgraded exhaust... Kind of loud and whinny. I got new tires this morning, but the car was not making the sound this afternoon and it doesn't sound like road noise. Could they have knocked something off my exhaust when they installed the tires? Could my turbo be going out. Any ideas?