You can change your pvc valve. Its connected to a vacuum line running from intake manifold to a canister on the back of teh block, should be like an elbow valve.
Also, you can run some guaranteed to pass stuff in ur gas tank then refill and go. Or you could do it my way and run some ethyl alcohol aka denatured alcohol. I went a straight week of trying to pass, even converted my mpfi car to dpfi thinking it would run cleaner, it got worse. So i read about the ethyl alcohol, put a gallon of it to my half tank of gas and passed
