sulfer smell ... cat?

[David Sisson <dms@domain.elided>]

hi, some of you might remember me mentioning that my car (86 spider
grad) has a distinct smell of burning sulfer when at higher rpms/highway
situations. i'm trying to figure out what to do about it, as it hasn't 
magically gone away. could it need a new cat? 

dave s.
86 grad

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