so for the past 6 months my car smells like sh*t.  once i shut it off or come to a stop it smells like someone sh*t themselves....and its not me cause i would be proud of that one.  anyway i complained to my service manager and she told me to run different fuel in it....so i did this for 6 months and i went back to her and said the catalytic converter needs replaced cause it aint gettin better.  she says she wont do anything for me cause i have an rksport intake on it.  wtf does that have to do about it?
 
Does it by anychance smell like Rotten Eggs?  If it is,  i was told it normal,  but i'm not 100% sure on that,  a mechanic told me thats the cat working harder.  it happens to my Z24 when i floor the gas
 
your intake shouldnt have that much of in impact on your cat... that smell you smell is sulfur, and yes, i would say you need a new cat.
Ask her why she wont do anything for you, i'd be intrested in her answer.
<img src="http://img.villagephotos.com/p/2003-11/504808/z28.jpg" width=317 height=59>
 
Hook a computer up to the ODBII port and when the engine is @ idle take a look @ engine load, should be really low (5-0

 anything higher than that means there is something wrong and is possible that the cat converter is causing backpressure on the system becuase it is clogged.
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** Flat Broke Racing Inc.**