they told me the car isnt ready. the egr valve isnt reading. they told me to drive around to finnish the drive cycle. i havent had any codes or unplugged the battery in forever. There is no check engine light on either. took off the egr and cleaned it, and made sure it was working. drove about 40 miles, and failed again. had my car tuned forever by ADC could they have turned something off? i need to pass soon cause tags are due at the end of the month. any advice?