All I did was an oil change today and when I went to start the car it thew this code. It's for a fuel rail pressure circuit malfunction. After clearing the code the car stalled after about 2 seconds of starting it. I started it again and it drove fine. The next time I started it it stalled again. Turned it back on and service engine soon light came back on. Any ideas? Vortech has been on the car for 3 weeks with no problems until now. Car has a PPRV delete with a svt focus pump. There is a full tank of gas in it.