Originally Posted by bboy
I would not make any bets on your local government making changes such that OBDII is required for emissions testing. Very few states "require" the OBDII reading to pass emissions. My car with the Hydra installed can pass WA State emissions without OBDII in place. Passing emissions is all about idle and closed loop fueling here in WA State, test are done on a "dyno" of sorts with a sensor up the tail pipe.
According to the state of WA emissions FAQ, they use OBDII testing on all cars 1996 and newer. I believe every state that does emissions testing now does it first by OBDII and some allow you to take a secondary sniffer test. Most however do not. WI and IL here just recently cut back staff and hours at testing facilities since doing the OBDII scan is so much faster.