I have a 00 Dakota r/t and my cat is going out (again) I replaced my factory when it went out with a high flow magnaflow cat and now that one is going out and throwing a check engine light on...should I run straight pipe?? wit out messing anything up or without it messing my timing up???



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No a cat is a long lasting part it should last 9 or more years.

You have another problem going on unless you got a piece of crap cheap cat off ebay that was worthless.

read this

http://auto.howstuffworks.com/under-the-hood/car-part-longevity/catalytic-converter-last.htm

And this http://www.bobistheoilguy.com/forums/ubbthreads.php?ubb=showflat&Number=2379768

 

It seems like all you do is post a hell of alot of ****, and i think no one cares about you or your opinions. in almost every thread i open you say some dumbass stuff...

 

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

 

every thread i look at.....

 

im no expert but have you tried o2 sensors?

 

Have you ever changed the muffler? I went threw 2 cats in under 6 years. Then I decided to replace my muffler which was factory and it was packed full of crap. You could try putting a new one especially if yours is still factory.

 

I have a flowmaster muffler and I've replaced the o2 sensors already so I was wondering if it be best to get another cat or straight pipe it


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I've replaced my 02 sensors already .



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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.