i got a po430 code and found out the cat on the left bank was not working...so i had replaced all the cats (2 on each side) with one on each side high flow by car sound (magnaflow) put the sensor before and after the cats..these smell bad its been a week or more since i had this done..when i start it up when parked or over night the exhaust smells nice and sweet...this cars runs great and also that fixed the code....98 vic with 4.6...i replaced the following: new plugs motorcraft platinums,new maf, new fuel press. reg. new coils,and i use 87 conoco gas...are these new cats suppose to smell in this configuration with just one cat on each side?....advice on any other ideas would be helpful..

 

Usually, the rotten egg smell is from a newer converter and an engine that is running too rich.
Have you unhooked the battery for awhile to reset the computer?
Jimmy

 

yes, i will try it again....