After doing the CCV and hoses this Sunday, the car idles a lil rough (randomly). Changed the air filter and the 2 cabin filters (as recommended by cn90, I went to autozone...got the Fram and cut it down to size). Then my "service engine soon" light came on yesterday. Is that a coincidence or not? Didnt have time to get the codes read yet. Also, feels like my car lost some power...but maybe thats in my head.