Also if you live in an
emissions county in Texas (most of the counties near large cities), you will still legally need catalytic converters to pass the yearly inspection required to renew your registration.
In practice, they just plug into the OBD2 port to check for emissions codes so you might be able to get away with no cats if they don't do a visual inspection for cats underneath and they ignore the smell and your tuner tunes out the cat codes but not guaranteed and bad for the environment.