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Old 01-04-2017, 05:53 PM   #57
rainmonkey
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Join Date: Aug 2012
Drives: BRZ - Dark Grey
Location: MA
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Hey, so I have a perrin tune that was configured for CA 91 gas... I failed my smog today and the printout says OBDII Monitors Not Ready, Evaporative System, Oxygen Sensor
Everything else passed.

Now the thing is, I just had the battery replaced after the car was sitting dead for about a month (went out of town). Do I need to reflash to the stock ECU programming? Or just drive it for 100 miles to get 'wake the ECU up'?
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