i have 93 civic hatchback i put on a high flow cat and it seems to have givin my car a little bit stronger exhaust odor! and the car smokes a little bit not bad and its white smoke wanted to know if that was normal? and if anyone else had that problem or of anyone else has a high flow cat on there car if so whats your opinion on them??

 

all cats have chemicals in them to clean up exhaust gases.

those chemicals burn when hot exhaust gases are passed through the cat.

this smell is often noticeable on new cars and cars with new cats...

 

^ yeah it smells like rotten eggs on some cars[:'(]