my exhaust is rattling sounding like it is hitting against something under the car. anyone have experiences with this? is there somewhere particular i should look? i tightened down the exhaust again but the rattling is still there. realllly annoying haha. please help.

 

List what kind of exhaust it is and you will get better answers.

 

could be your cat, my honeycomb broke on the inside of mine and was really annoying

 

Check your cat heatshield.

 

oh yeah and if you get a cel soon that comes up 02 sensor secondary, you know for sure it is your cat, because if you let that go it will actually break the tip off of your 02 sensor

 

thanks for the input guys. i have the hks hi power and a t1r test pipe. i will check the heatshield what i have time.