why does my car sound like this, deeper sound on stock? Options

[quicknstyle]

ok, i noticed about a month or so ago that my car all of a sudden sound a lot deeper in its tone... like i have an exhaust or something... i have not engine mods at all, but the car is at about 176k mi. what could be the problem? im kinda worried because its my only means of transportaton and if its a big problem. i want to fix it now and avoid any further damage, im a broke college student who doesnt have much money to fix, so the earlier the better thanks all... this site works wonders

[Newbie]

Check your resonator, see if all of the intake pipings are connected.. While you are at it, take the resonator out anyways.. Oh yeah.. Check the intake piping where it connects to throttle plate too. If not, you can always check exhaust pipings for leaks and gasket for worn spots or gaps.