Civic EG

while driving on the interstate my car suddenly got LOUDER.. and i could feel the vibration inside the car from the exhaust. i'm not sure if it's the exhaust or tranny but the car is def. louder than usual now and idk what's the diagnosis.. any help is appreciated

some thing like were the conneters of the pipes eather rusted out and now there is a hole or it broke completly.also could have blown a exhuast gasket.you would have tojack up the car and look for the problem.
smoke out-

I had that same problem while driving on the highway. Turned out for me was that my muffler rusted through the bottom.
I would check that first and them work your way towards the engine along the exhaust underneath the car.

so i waited till the morning for a better view of things w/ the sun out and voila!! the damn exhaust pipe broke of right where the catalytic converter was.. so it was estimated at 300 for the new converter and labor so i'm not short that much.. happy to have a not so loud car anymore now though

look at the size of that hole. did you cause any backfiring? That would be crazy, driving and then boooommmm. that would scare the crap out of everyone.

Glad you fix the problem.

mine did the same thing about 2 months ago i got a cheap ebay header back stainless steel exhaust for 200 shipped if you want a cheap fix that will last for awhile look into it

one more thing i was down in va beach over the weekend and pick n pull has 4 eg civics there with alot of parts still left on them check it out too