2020 vs 2021+ Catalytic Converter

[Brostradamus]

In related threads:
https://www.supramkv.com/threads/ecutek-tune-causing-obdii-emissions-to-fail.23749/
https://www.supramkv.com/threads/wtb-a90-oem-downpipe.23750/

I discuss having some issues with passing emissions due to my aftermarket work. I'm trying to source a 2020 Supra OEM Catalytic Converter which is apparently part number 25051-WAA02, but there are also 2021+ OEM catalytic converters available which are part number 25051-WAA07. Toyota claims the parts *might* not fit, but the part diagram for both sub assembly parts list identical components:

2020: https://autoparts.koonstoyotatysonscorner.com/products/product/converter-sub-assy-25051waa02

2021+: https://autoparts.koonstoyotatysonscorner.com/products/product/converter-sub-assy-25051waa07

Does anyone have experience with these parts? If I purchase a 2021+ catalytic converter for my 2020, will I actually have fitment issues?

Thanks.

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[Extreme Power House]

both should fit but are you spending this much to replace the cats, get the active autowerke downpipe instead. Its EPA approved and wont trigger the check engine light and its a fraction of the cost

 

[Brostradamus]

I currently have the ETSi downpipe installed, it's also "EPA approved" and I don't have a check engine light, but nonetheless the ECU is reporting "Unsupported" for the O2 and Catalyst tests. I'm working with the tuner to get this figured out, but as a backup I'm sourcing a used OEM downpipe.

 

[razorlab]

I currently have the ETSi downpipe installed, it's also "EPA approved" and I don't have a check engine light, but nonetheless the ECU is reporting "Unsupported" for the O2 and Catalyst tests. I'm working with the tuner to get this figured out, but as a backup I'm sourcing a used OEM downpipe.

That is 100% the tune and not the hardware. He probably has the 02 CEL turned off in the tune.

 

[Burn Rubber 3.0]

i have a 2020 cat with 2500 miles,
$500 plus shipping.

 

[Burn Rubber 3.0]

can't figure out how to do jpeg

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