Im in northern Cali. The bay area. I have intake, exhaust, boost fooler, and Tony Wildman custom tuned chip. I haven't been smog tested yet with the tuner on, but with the other stuff it passed just fine. When I ordered my chip from Tony though, I clicked the box saying I was a Cali truck so he wrote tunes to help it smoke less and better pass smog.
Right now in my 140 extreme tune I can barely see a haze. But I also got a stock setting for smog tests too. I plan on registering my truck in a smog exempt county soon though once I start adding injectors and a turbo and such. Not sure if this helped you out too much, but I have confidence that my exhaust, tuner, intake, and boost fooler will pass smog test just fine