Is there any way of telling if the main cat is bad or not? Mine looks pretty new (not a lot of rust or anything) but the last few days I have noticed a sulfuric smell when the car is runnig. I know that sometimes cats smell like sulfur when they are going bad. Also, i just recently flunked emissions testing.

Any help is appreciated.

Thanks

 

Here's a thread along the same subject:

https://www.rx7club.com/forum/showth...hreadid=158818