Ok so when I am done driving my car for a long enough period to actually warm it up, I hear this annoying clicking sound. I figured it was something to do with the exhaust but to check I drove it up onto my ramps after driving and it was clicking, and it is coming from the cat... anyone know why? is the cat rusted inside and the heat is making it worse?

 

think it is normal.
metal has expanded; now contracting

 

It's normal, just your headers cooling down and contacting like fglaustin said.

 

i figured it was normal... but is there anything i can do to stop it... its just annoying haha

 

not that i know of

 

Replace your exhaust manifold with aftermarket headers.

 

its not the header... its the cat, so i guess replace the cat? plus my stock header is 4-2-1, so i'm not going to spend money just to get the dc name on it... i'm broke right now haha

 

think a new cat will do the same; may have to learn to live with it

 

Does it stop or it just keeps going?

 

dont know - i run stock - never had it.
<edit>
but guess mcmichael runs stock too