Texas has it too. They granted money to Texas A&M to set up monitoring trucks on the on Ramps of freeways to sample and take pics of vehicles as they enter the freeway and then send you a notice like that. Rumor has it that they have emission police that follow up on really bad vehicles and make you fix them or they yank your registration.
Actually they can,just like an old worn out gasser that smokes.It just doesn't happen very often.Haha that's hilarious.. There's nothing they can do to me, it's pre-smog and runs how it's supposed to.
"Rollin Coal" has really hurt the Diesel performance industry. How long did you think we could do it and nobody complain? To me its a little childish, "you cut me of, well I am going to blow smoke at you". I did my share in my day so I am guilty also. But making a diesel smoke is EASY, I am not impressed. Make some REAL POWER without smoke, that IS something to be proud of. If we keep it up, states WILL be forced to do something about it, not just a letter. Often we can be our own worse enemy.