Looks for new catalytic con. HELPPPP ASAAPPP THANKS ! - Hyundai Genesis Forum
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Check engine light just came on looking for a new catalytic convertor any recommendations??? Dont really feel to keen on buying a new one from Hyundai dealer & paying dealer price .. has anyone else needed to replace theirs ? And know of a good brand ? if possible drop a link

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Hahah, most peeps on here chuck their cats as soon as they can afford mods.

Anyway, don't know what engine you have nor where the car is licensed. If you live in CA with a 2.0, you're potentially screwed. Nobody makes a 50 state legal catted downpipe. There is a CA compliant secondary available, though. On the 3.8 there's nothing CA legal that I know of. Not sure how Canada works. Otherwise, Magnaflow has you covered, I think. And their parts are sometimes a bit cheaper on Amazon. Definitely use a saver app or ad-on to find the best deal and search for e-retailer coupon codes.

Hope this helps!

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Lol yeah but idk much .....I have a 2.0t . Pennsylvania plate and urm well any downpipe rec’? I was looking into it but wasn’t sure how to go about it just don’t need problems during my inspection ... besides I’m a girl gen driver first car w no experience on doing mods w cars but iam learning & swaping as I go along lol




Welp nvm sorry on the down pipe rec’ I need to pass inspection coming up soon. Don’t want any problems there . Guess I look into MagnaFlow

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Oh, I'm sorry, maybe I wasn't clear. You have a downpipe, but as it's stock and bears a catalyst, people call it a cat, or an O2 housing(Because it also contains the O2 sensor bung). That piece is your first catalytic converter. Downstream a bit from there you have a secondary catalyst that just bolts inline to the exhaust. In turbo exhaust world, you'll have the manifold, then the turbo, then the downpipe, usually a section some call a mid-pipe or up-pipe(Obviously named based on their orientation in the chassis...) then what many would term "The Exhaust", which includes resonators and mufflers, etc.

In our Hyundais, the secondary cats sit in line between "the exhaust" and the up/mid pipe.

Magnaflow, which is a reputable company selling decent parts, carries OEM grade, 49 state legal Primary(downpipe) catalysts and secondaries as well. I couldn't obviously tell you which if either is malfunctioning on your car, but either one or both will set you right without having to resort to Hyundai dealer prices. They're designed for direct factory fit and function.

As far as A downpipe recommendation, I'm not super well versed on the 2.0. I have a 3.8. My only advice would be to buy a decent defouler extension to mount your O2 sensor. Removing the cat obviously causes dirty exhaust which will mess with your O2 sensor and subsequently your computer. The defouler pulls the O2 sensor back out of the exhaust stream a bit preventing the problem.

I hope I helped. Happy Trails!

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Thank you u help very !
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The secondary cat on the 2.0 can be removed and NOT cause a check engine light since there are no sensors. The error you're getting is probably for the cat in your o2 housing. Before you go replacing a section of your exhaust, are you sure it's the cat and not just the o2 sensor?

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Quote:
Originally Posted by mrGainZ View Post
The secondary cat on the 2.0 can be removed and NOT cause a check engine light since there are no sensors. The error you're getting is probably for the cat in your o2 housing. Before you go replacing a section of your exhaust, are you sure it's the cat and not just the o2 sensor?

Better explanation

Oh, and remember, MrGainZ, she could also have a collapsing secondary which would also throw a code, eventually. The backup causing either or both flow and fouling issues. Though it's somewhat unlikely. I've only ever seen it once in a ceramic catalyst. Mostly, they just crumble and blow out the back.

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Quote:
Originally Posted by Odelagt View Post
Better explanation

Oh, and remember, MrGainZ, she could also have a collapsing secondary which would also throw a code, eventually. The backup causing either or both flow and fouling issues. Though it's somewhat unlikely. I've only ever seen it once in a ceramic catalyst. Mostly, they just crumble and blow out the back.
Yeah always a possibility! Our cars are still fairly current so wasn't expecting OP's secondary to give out that fast but never know lol

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I know I'd be extremely pissed if one of my secondaries failed. Primaries would be understandable...

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Quote:
Originally Posted by Skydaze View Post
Check engine light just came on looking for a new catalytic convertor any recommendations??? Dont really feel to keen on buying a new one from Hyundai dealer & paying dealer price .. has anyone else needed to replace theirs ? And know of a good brand ? if possible drop a link
To pass inspections here in PA it's good to get a stock one. They are easy to find on facebook or other online vendors for under 250. It's good to have it even if you replace it later on for a high flow cat or full turbo back exhaust
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