Just took my car to the dealership to have my cats installed on monday and now all i hear is a loud ratteling noise coming from the floor of the car, can somebody tell me why and what can i do to fix this problem HEEEELP!!!!!

 

have them bend the cats heatshield. it's a known problem.

 

bend the shield or get rid of heat shield like I did to make sure.
I had RTcat withthe problem=got raspy noise.
Crawford=nice deep sound.

 

jesus so which is it...are they ratteling or rutteling?????????

 

^^ neither you ****!! thay are rotteling!!! damit! get it right!!