[Im2tall33]

I was wondering if someone would mind helping me with a couple questions. my car seems really sluggish from about 2,500 rpms on, could it be a clogged cat? If so will it harm the car at all if i just cut them out completely? we dont have to worry about emmisions here in idaho, so i could get away with it. Thanks for you time.

[stlwagon]

If it clogs completely you will damage or blow your motor.

[Im2tall33]

is there a sure fire way to tell if your cat is clogged though?

[edzdallas79]

i don't think it's your cat. if it's only after 2500 rpm i would think it's something in your EGR system or the o2 sensor. you can test the cat by hitting it with a rubber mallet to see if there is a bunch of stuff getting knocked around in it is what i've been told, but whenever i've taken a car to get the cat tested at a shop, they always measure the temp of it at the front of the cat and the back of it, but i'm not sure what temp it should be at.

[ITLRUN]

If it's hotter in the front, then it is in the back two different readings tells you it's clogged, Mike. SCT Tuner

[Im2tall33]

thanks for your help, i will check it out tonight when i get home.