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Originally Posted by jonny51
Yeah that is what I thought.That has to be one of the biggest BS law out there.Even if you improve emmisions its still illegal if it does not pass visual. 
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Yep,
I remember in the early 80's Weber carbs came out with legal replacement carbs for the small cars and mini trucks. They wanted a California EO# so during testing it was found that they improved the emissions too much. They would not pass them!

Seems you have to be a certain % either way (as compared to the factory carbs), and they were too clean at the tailpipe. There should be NO LIMIT on improving emissions period. Whatever pinhead came up with that restriction was a moron.
So Weber had to "dirty" up the carbs to pass. Absolutely mind-boggling how the bureaucrats can screw this smog deal up so bad.
Jody