Catalytic converter replacement

[Doubeleive]

Do this and dare them to offend you.

View attachment 370705

haha good one

 

[THarber]

As others have stated there are other things to check first. Manifold leaks, exhaust leaks, maybe even a bad O2 sensor. Replacing the cat would be last on the list.

 

[Fless]

Our legislature and governor have enacted a law requiring use of CARB compliant cats when replacement is needed. Essentially a siamese twin law that references Californicate's law. How about we think for ourselves?

Aftermarket catalytic converters | Colorado Department of Public Health and Environment

Catalytic ConvertersA catalytic converter is an emissions control device that is installed into the exhaust system on vehicles powered by an internal combustion engine. Catalytic converters reduce toxic pollutants by chemically converting carbon monoxide, unburned hydrocarbons, and oxides of...

cdphe.colorado.gov

 

[Jeff_]

OP, if you live in California, then buy the cat and have a muffler shop install it. Maybe try a pick-the-part type place first too?
If you live outside of California, just get some magnaflow cat or whatever and call it a day.
Or, if outside California, have it tuned out, like the check engine light can be cleared - plenty of high performance vehicles out there without cats, or so I've heard.

 

[iamdub]

...plenty of high performance vehicles out there without cats, or so I've heard.

And not-so-high-performance vehicles.

 

[Rocket Man]

- plenty of high performance vehicles out there without cats, or so I've heard.

In my city about 1/4 of the vehicles on the road as well as 75% of the Pruises don’t have cats thanks to the cordless cut-off saws that have become so popular and the fact there’s precious metals inside.

 

[Plato442]

I use flowmaster cats. Had to replace one in the 03 Yukon Denali and have since cammed & tuned it and it’s the cat is still working great after 40k miles. i had a broken 3rd cat on my wife’s 11 Sierra Denali, didn’t know it until I removed and already started replacing the RT/LF cats. So removed downstream 3rd cat and replaced the other two, it would start randomly throwing a 430 code so I added an o2 sensor extension and no more code. Ugliest welds I’ve ever made, but everything is running great!

 

[2006Tahoe2WD]

There should be a CARB code stamped on the CAT. That's what they used to do. And keep all your paperwork for when you bought it.

 

[Doubeleive]

OP, if you live in California, then buy the cat and have a muffler shop install it. Maybe try a pick-the-part type place first too?
If you live outside of California, just get some magnaflow cat or whatever and call it a day.
Or, if outside California, have it tuned out, like the check engine light can be cleared - plenty of high performance vehicles out there without cats, or so I've heard.

definitely cannot buy a used cat in California (to re-use) no shop will weld a used one on for your either because they could loose there business license, I don't think you can anywhere (legally) but could be wrong

 

[Rocket Man]

So many questions yet the OP never came back to answer any. Where ya at @mijohnst ?