86GT 93LX

how do u tell it your cat(s) is plugged up??? does it really smell like rotten eggs when flooring it on the freeway? or is that a myth??

PRO50SC

Generally is causes loss of power, you may even hear the broken pieces inside the pipe rattling around.

2 kwik

running hot,convertor red, the rotton egg think was back when the used plat. in them

86/02stang

You will here $hit banging around inside of the cats. I after running for a few minutes they will glow a reddish color. There will be a slight loss of power to.

86GT 93LX

so no rotten egg smell??? i dont hear nothing rattling, have too look to see if its red hot, but i doubt it, i stuck my oldmotor and stuff back in my car and its running rough and ive smelled rotten eggs several times taking off onto the freeway.

rmodel65

mine cut off after a hour or two of driving let it sit the cats would cool down and it would run fine i had bad 02s which caused them to clog

89GTRed

my cats actually blew open on my e350 van when they clogged up....[>:]. That was the only time I have actually had them "clog" up on me. Generally when your cats go the honecomb starts falling apart inside. But yea you should be able to hear it if it starts falling apart in there.

ZachW04Stang

When there clogged normally you will have trouble reving over 2500rpm-3500rpm. There could be bucking, glowing red cats. Cats don't normally just clog themselves unless they break apart. Normally when a cat gets clogged something else is wrong.

mattdel

put your hand over the exhaust pipe and have someone rev it. the rev should be sluggish and bucking, and the exhaust flow should be very little to none.

89GTRed

if theres none than you have a major problem because that means you had to have blown something for it to leak out somewhere else.