Yes the cheap tester will not erase the history, the Durametric will. You have to look at your emissions label there is what's called the 49 state emissions and there's a California 50 state legal emissions. State law requires you to have whatever the car came with.

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Did this car pass? Curious since the headlights are cloudy.

Would you have any recommendation for these cheap testers and how to see if the test are done?

Sorry for these stupid questions. I'm. T familiar with this.

There are plenty out there. There is actually a thread on the cheap $15 obd2 bluetooth ones that you can install a app on your phone and monitor the functions including the readiness test and whether they are performed or not. If i remember later i will post a picture of the screen that shows whether the test are complete or not.

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http://images.tapatalk-cdn.com/15/06...8e1e8953b0.jpg

This is from the torque app on my phone with the $15 bluetooth connector.

Just drive until the readiness test are complete...

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Great info for those of us that needs to smog.
Illnsee if my Dashcommand has this. If not Torque app it is.
Thanks.