What aftermarket cat will not throw codes? - TundraTalk.net - Toyota Tundra Discussion Forum
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post #1 of 3 (permalink) Old 09-20-2019, 03:17 PM Thread Starter
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What aftermarket cat will not throw codes?

Typical p0420 and p0430 on 2009 tundra with 5.7L ffv auto 6 speed tranny. Spark plugs replaced, air filter new, 02 sensors replaced, no exhaust leaks found, truck runs good with no loss of power. Codes were cleared after repairs, only to come back 30 miles later.

I do not want to pay Toyota oem prices, they are absolutely absurd for something that I really don't care about. Short of chancing it on a used oem set, what aftermarket is available that will not throw codes? I've read magnaflo and Walker are acceptable, but others contradict that. Some say the direct fit is the only way to go to stay code free, but again others contradict that. I'm not putting this on myself, my back can't handle the r and r nor can I weld. A universal weld-in part would be ideal, but to get it to be code free for the foreseeable future, I am not set on that.

Please help me find a solution, I have 4 days to get this fixed, tested and registered.
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post #2 of 3 (permalink) Old 09-20-2019, 10:03 PM
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You can get an electronic O2 sensor simulator from URD. Works great on two of my Tundras with Long Tube Headers And no cats.
Or a mechanical one from amazon, but if you have to pass a visual emissions inspection, they might notice it.
The electronic one is undetectable.

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post #3 of 3 (permalink) Old 09-21-2019, 05:42 PM
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I have gutted cats before, then weld the can back up. However in MI we don't have smog testing, or visual testing. And if we had even visual testing you wouldn't be able to even tell after a winter.

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