Everytime I park my car, it smells like rotten eggs from the outside. The longer I drive or the harder I step on the throttle, the stronger the smell is. I think it is coming from the catalytic converter but I am not sure. Anybody have any ideas or suggestions?

 

yes catalytic converter

 

It should be the cat. I know some guys who are catless who run at my track from neighboring states on Sundays and the smell is god awful.

 

if it's only after some high rpm action, it's prob ok. if it smells all the time, your cat could be toasted.

 

Try not to eat so much gassie food before you drive around




















Na, It's the cat change it out.

 

most def the cat!

 

GS430s run 2 cats ...right ?

 

I think it's 3, 2 on after the Headers and 1 before splitting off the exhaust

 

so can a 430 run with a single hi flow cat or do all 3 have to be replaced ?

 

Yup def. the cats

 

If the cat smells then stay away from it!!!!

 

yep cats

 

My sister's 2006 IS had this smell since new. So does that mean the cat needs to be replaced?

 

could also be a battery, sulfer smells like rotten eggs also. Check your battery for swelling

 

do you feel any lost power? same thing happened in my other car and found out the cat was clogged. they drilled a hole before and after the cats and placed a pressure meter in them... before the cat = super high pressure, after the cat = no pressure. Replaced the cat and all was good.