Good alternatives to OEM catalytic converters?

RLara485

Currently running test pipes on my 2012, just read that my county will begin doing emissions next year. Emissions have never been a thing here so this is an area I'm fairly clueless about.

The default will be to get OEM cats but I'd be interested in seeing if there are less expensive options that will definitely pass the smog test. A lot of these high-flow cat options look great, but I'm unsure they would actually pass?

abm89

Your best bet is to look for someone selling stock catalytic converters for a sure pass. I have some Old high flow cats that passed, albeit with a proper tune.

TX doesn't do the sniffer test on the cars, they do the OBD2 readiness check.

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RLara485

Looks like that's what I'll be doing. Are all years/transmissions/packages interchangeable?

nis350

I suppose it all depends on how they do the emission test. If they just plug in the odbc to look for codes, then you just have to ensure that the car isn't throwing any codes. However, it is much tougher if they are running a roller test to measure the tailpipes emission, then you must have cats that work.

RLara485

Well looking at the prices of the used OEM cats they are going for quite a bit less than I expected.

My only question now is are all years the same? I was under the impression they were, and if I could get a newer year with fewer miles I'd prefer that.

But looking at Nissan Parts Deal it says the following are compatible with my 2012:
Production Date: 09/2010-06/2014

Unless I'm reading into this wrong

nis350

lowest mileage from a "stock" motor is the way to go. I imagine the fitment is the same, but the spec maybe a bit different between years.

abm89

for compatability, go with what is recommended. I do recall they changed up the design of the cat, but im sure it fits the same. Nissan Parts Deal is legit. That's where i go for OEM stuff unless Z1 has it cheaper with shipping.

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Tractionless

High Flow resonated cats here (FI) and my Ecutek tune passes ODB2 Readiness check as both front and rear 02's are functional.

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Toys Not Tots

Tractionless

Cheapest I've seen! IMO the R&R is cake, I'd put them in for testing then remove until the next test is required.

Catalytic Converters & Headers

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