That's just another way for the state to take more of your money. Considering the fact that all new cars come with more than is required in the way of immisions control, why is it that they make you get a one year old car tested on the dynomometer? It's all about the greenbacks.
Where I live, in most places you can pay a bit extra to the owner/mechanic and he'll "fix" any problem your car may have in passing the test. Rhode Island is the most corrupt state in the country according to many, and from my standpoint they are right.
Besides that the test is flawed. They put a sensor at the end of your tailpipe, but what if your exhaust is not connected tightly? It will test on the low emmisions side and you're off to the races. Gotta love the way the government thinks of any way they can to screw you. I know many mechanics who agree with me, but god forbid they voice their opinion, or they lose their job, or worse yet, their license to do inspections.