1999 Ford F250 - Question on emissions

[db4690]

@TheWonderful90s

I read that the inspector will verify the numbers on the catalytic converter to ensure that the correct part is installed

correct

@TheWonderful90s

Maybe they do allow some non OEM catalytic converters I’m not sure

Yes, there are lists of approved cats

@TheWonderful90s

I assume the inspection would pass if another catalytic converter was put in line with the factory one.

Nope

That’s tampering