Well sunday night my car started to misfire but not extremely bad. I pulled the code which was P0496 and changed the fuel pressure valve thats located just to the right of the valve cover if you're looking at the front of the car. I cleared the light and took it for a ride. Still misfired. So i then changed out the plugs and fuel filter and went for yet another ride and its still doin the same thing and progressively gettin worse it seems. Also it now has a P0300 check engine light on. A guy that I work with thinks that its a coil pack. Just curious to see what you guys think it is or if you have any advice that might help me figure out whats going on with my car. Thanks CSS.NET!!!