No mods on the car at all, And when the light's flashing saying I have a miss it dosen't have one, and it still comes up as a 300 code (which won't specify a cylinder) Like I said the plugs came in about 20 minutes ago so I was gonna do them today but it's cold as hell so maybe tomorrow, then I guess I'll just have to start taking things apart, I'll probably take off the fuel rails and clean them, then I'll check the injectors, then the coil and ignition module lol.. what a nightmare this car has been since I got it lol...