That's not actually answered. MythBusters didn't reveal models they tested (I watched the episode). Similarly, it's possible that those 3 bikes they tested didn't have catalytic converters. As well, they said they did test one with a catalytic converter but it ended up being worse on some emissions than one of the bikes they tested. (Which makes no fucking sense)
SO.. That's why I want specific numbers from many bikes and cars. Not a general overlook. I don't give a shit about the excuses. I just want numbers.
Wow. Good luck then. You really know how to win over people who are trying to help you, for free.
