im not sure why you are worried about smog stuff in Texas but most aftermarket exhaust have high flow cats or sensor spacers with cats in them.
https://www.fabspeed.com/porsche/boxster-cayman-987/

if i lived in texas i would get the full soul performance exhaust. the sound is amazing.

if you want a low cost solution just modify some spark plug defouler to clear the CEL, look it up on youtube. if you track the car you could get the softronic ecu tune and the ecu will ignore the post cat o2 sensors and he is a sponsor here.

good luck

check this thread for other options
http://www.planet-9.com/987-cayman-...man-and-boxster-problems-and-complaints/120154-bad-cat-whatre-my-options-3.html

 

Keeping in mind that at some point, state authorities are going to require that you submit the car to some form of emissions testing to continue it's registration. I can tell you, the Soul Performance Long Tube Street headers I put on my car (which include HJS 200 cell performance cats) delivered a significant performance improvement. Mated with my Carnewal GT Exhaust (which are mofified OEM mufflers) I have a drone free solution worth considering.

 

Unfortunately Soul PP doesn't sell a header with cats for the 987.1. I ended up with race headers and o2 spacers. Those should be going on the car this week.

 

Thanks so much for your input. I just ordered the FabSpeed Headers with 200 cell German made CVs integrated. Can't wait to get installed (3 week lead-time) and matched with my performance exhaust system and see the difference on next COTA driving day