Re: california smog Test
I don't really understand what you're trying to accomplish. I assume when you say that you want some sort of regulator on the smog pump line that you want to somehow reduce the flow from the smog pump to the exhaust system. If that's what you want, doing so will not help you pass smog and it will actually raise your emissions. The smog pump forces more air into the catalytic converter to help it catalyze more of the unburned hydrocarbons which lowers emissions.
If your Bronco isn't passing smog, the best place to start is the catalytic converter/converters. They aren't cheap but they're usually the culprit if the engine is in good tune. I assume you have a carb.....so be sure your air cleaner is new and mixture screws are adjusted correctly to prevent an overly rich mixture. A tune up does wonders as well.
1992 Ford Bronco
E4OD- B&M Stage 2 shift kit
Full 3" stainless Bassani Exhaust
32" BFG's/stock suspension
"No replacement for displacement."
"Our lugnuts require more torque than most Honda's produce!"