Before owning my teg (which due to the moron who owed it before me, was deemed a damned gross polluter.. yikes...), I had a 93 EG Civic in which I replaced the stock cat with a "high-flow". Passed California smog like a charm. I'm hoping that my teg will pass now (the stock cat was punched completely clean. I was at a 2000% level on my nox output haha) that I've gone to the same place and replaced the exhaust system with the same type. Wish me luck guys, otherwise I'll have a warrant in about 2 weeks! lol