Quote:
Originally Posted by cRiPpLe_rOoStEr
I don't remember the exact emission limits in my country, but motorcycles have been at least one step behind automobiles now.
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Motorcycles are way behind cars in the USA. 2020 motorcycles are allowed to pollute more than cars from 1995.
Quote:
Originally Posted by cRiPpLe_rOoStEr
AFAIK only a handful of Chinese motorcycles are still fitted with carburettors in Brazil, but they must comply to the same standards applied to the ones with EFI.
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Only a few motorcycle in the USA still have carbs but lots of scooter still do. Our emission regulations are loose enough that carbed bikes can still pass.
Some examples of Carb vs EFI:
2020 Yamaha TW200 - 1.5 grams HC per day
2020 Yamaha WR250 - 0.1 grams HC per day
All of our emission certifications are public:
https://ww3.arb.ca.gov/msprog/onroad/cert/cert.php#6