Is there any way to tell if my car has cams? I don't know much about cams (obviously) but I've heard that they can give your car that old school muscle car sound. My exhaust sounds like this, "bub, bub, bub, bub" when idling and the car rocks a little bit. I bought the car used and am still trying to figure out what mods it has (I've owned it for 2 years and am still discovering things). Thanks in advance.