I need to replace my cat and I had a quick question.

Will something like this work with my car? https://www.jegs.com/i/Flowmaster/38...xoCs5kQAvD_BwE


In the description of it it says it is for pre-obd2 cars but I’m wondering why won’t it work for a obd2 car? Isn’t it just a cat? I have the o2 sensors before and after the cat on the mid pipe.

So will I run into any problems and get a check engine light if I were to use this?

 

It doesn't look like much of one, judging by the dimensions. That is a teeny, tiny little core.

The EPA regulations are stricter for post-1995 vehicles in terms of the performance and durability of aftermarket catalytic converters. So, most likely the manufacturer didn't bother trying to get this unit EPA certified for OBD-II vehicles, because they know it wouldn't pass.

Would it work if you installed it on your car? Probably, at least to some extent.

 

So my plan was to bring this cat to a muffler shop and have them build a custom 2.5inch mid pipe with it.

if I were to do this do you think I’d get a check engine light and fail smog? There’s no visual inspections or anything else where I live, they just hook the computer up to my car and that’s it.