Originally Posted by 98DAKAZ

Your thread?

If you say so everyone has an opinion I don’t see anything wrong in my post chin up you get to fussy take a smoke break relax.


Seeing as you only show 3 posts that’s an amazing statement so I have interrupted you two times ????

Touch touch touchy

Originally Posted by jondakotaguy

So what motor are you running? Truck details.. 5.2 and 5.9L have plenum problems that can lead to crapped out CAT's..

Did you have any recent no fire conditions or anything? Other than your 02 sensors what have you done to determine the CAT is bad?

I mean Magnaflow and other so called "High Flow Cats" -actually just thinner ceramic plates... can cause 02 to register non-functioning CAT and non-fouler trick is needed sometimes*

I would get it checked out to see if it's actually bad or not. they can do pressure test before and after the cat or they can check the temps the front side would be hotter if it was plugged.

As well as some of the other outlined things to check as stated prior.