j9fd3s, Smog depends on how they test it. If it's all OBD2 like it is here, plug in the access port, disable the check engine codes and it'll pass every time. Some places still require sniffing, but here, they wont do it even if you beg.
With tuning and a good high flow cat, I think you could pass a sniff test even with a bridge port in a renesis.
Here's a clip of my car after we got it running... It's not all that loud even with 3" straight exhaust. It rarely throws the "lean burn" code, but I'll disable that once we're done tuning it, so think it would still be possible to pass a sniff test.
www.youtube.com/watch?v=C-WkRBKpqIE