You can go without air filter just for inspection. I removed mine just before they put it for test and make sure to take test when engine is hot. Take some spirited driving on freeway and go straight to test bed.
Learned it hard way that relation with test station also helps passing :-(
Now i always go to my old station who knows me and my extended family by name instead of saving few $$.
Learned it hard way that relation with test station also helps passing :-(
Now i always go to my old station who knows me and my extended family by name instead of saving few $$.