Originally posted by PmPiNAzNBoI
I have a weird sound coming from my exhaust. After I drive a while, and then park and turn off the car. I can hear this sound, something like a nail tapping on metal or something, coming from either the CAT or resonator. I can't tell which one. The sound started RIGHT after I put my exhaust resonator on. Any ideas of what the sound means and how to solve it?
Thanks.
My guess would be this.
When metal get hot it expands, then when you stop and turn your car off it cools off and contracts and it makes a creaking, or tapping sound.
Or am I compleatly off?