your check engine light on, or flashing?

and yeah an exhaust leak wont do anything but annoy your ears. when you go to the shop ask them to put a glass pack instead of a resonator, its cheaper and does the same thing. if they don't sell glass packs ask if they will install parts you bring to them, they cost 25 bucks at autozone. you want the one with 2.25 in and out lets and the same length as what you have now. or close to it.