ok i just installed new apexi ws exhaust...when i accel there is a rattling noise that sounds like its coming from under neath the car..is it just the exhaust rubbing on the stock heat shields or something like that that i can just bend or something serious...also i can kinda smell the exhaust when i stop and get out and junk is this normal and just part of breakin in the exhaust...

 

try raisin the car back up and go back over all the bolts and make sure theyre tight and its not leaking exhaust gas anywhere and also try shaking the exhaust while ur under there to figure out where its hitting underneath..... but mainly id just go back over all the bolts and making sure theyre tight.

 

ok i did that...it was rubbing somewhere, and i fixed it, i had a bunch of super rusted on bolts that i couldn't get off so i had a muffler shop do them for me, one of the things i needed off was my 02 sensor, and the only way they could get it off was by messin up someof the threads i guess, i went to a parts store and a new one is 230 dollars....hell no, mine works fine it just has messed up threads...what should i do???????please help

 

help plz this is very frustrating

 

bump