last night, i was trying to make a 180 turn since i went into the wrong street, so i reverse. the weather was pretty bad and i didnt see the curb and i backed into it. my exhaust hit the curb head on. i didnt even check it yet because it was late and i was tired. anyway... now there is a rumble coming from the center of my car. i hope it a crack gasket but i am not sure... please give me some more advice.

 

I guess get the jack out and crawl under there and see if your exhaust pipe is banging on something like your heat sheald or anything else.

 

My guess is that you have a leak where the piping bolts to the cat. No way to tell though until you get under it. Good luck bro

 

do u know if i will get bad gas mileage because of this