Here in CT there is no visual check, Yet. Do they actually hire qualified people , with the knowledge of entire emmission sytems of all the different makes of vehicles, for all the years that emissions were enacted? probably since 1968?
I agree that if you live in a visual check state,and your only option is a bbd, yes, you can make it run good. That is if the throttle shaft isn't worn out,and if all the sensors, electric relays, vacuum relays, solenoids , vacuum lines, wiring , and who cares what else, is in working order. I know that a non computerized bbd is much simpler, and can be made to run fine, but it wouldn't pass a visual on an 82 or later vehicle, if some Ralph Nader type dude was doing the test. My point is that most old bbd's have worn out throttle shafts, and that most old jeeps emissions systems are not in working order. THEY DON"T WANT YOUR OLD VEHICLES ON THE ROAD!! If I lived in a visual check state , and I had a computerized BBD, I would try to diguise my Weber, or go with MPI. Because in the end you could end up spending way more than you think trying to get your vehicle to pass a visual and a sniff test, and still have a vehicle that doesn't run good . CTjeepnut