I'm wondering if there is a way for a rookie who has never gotten her hands dirty to find out if I have a problem with the exhaust system. Remember when you used to stick a playing card in your spokes to make it go click click click when you pedaled real fast? That was cool! It's not cool when you notice that your car sounds like that! I noticed the sound a few days ago and it has steadily gotten louder, only heard when using the accelerator and keeps time with the speed ha ha! It sounds like an exhaust issue to me (even being a serious rookie) and someone mentioned that it sounded like the headers.