When it comes to pollution, my state is notoriously naive. My prior diesels were excluded from testing, so I am not as familiar with the regulations, even though the diesel test is far more logic based than the gas laws.

In order to be registered in California, my brand-new E320CDI must pass an emission test. After resolving all of the powertrain codes, the Icarsoft MBii indicates that three out of three emission monitors were successful. I thought that was it. There may be more, according to Google AI, but it's ...