Depending on the year of release of the attachment can vary.
-open the hood.
-under the hood, unscrew the four screws (spun down) that secure the upper part.
-unscrew the screws (spun upwards) that secure the lower part of the bumper.
-wrenched the wheel to the side.
-in the wheel wells, Unscrew the screws holding the fender liner (remove unnecessary).
-move the wing flaps to the side and unscrew two screws on each side (spun upwards) holding the corners of the bumper to the wings.
-with the assistant pulls the bumper forward (don't want to break the wires and hoses).
-snap together the connectors of the fog lights.
-switched the hoses to the headlight washers (if any, may leak fluid).
-open the trunk lid.
-in the opening of the trunk, Unscrew the four screws (spun down).
-in the trunk release the edges of the side panels (need to access the inner part of the wings).
-for skins, wings, unscrew three screws on each side.
-unscrew the five screws (spun up) that secure the lower part.
-wheel arches unscrew the screws that attach the fender liner to the bumper.
-for wheel arch liners unscrew one screw on each side (spun upwards) holding the corners to the wings.
-with the assistant pulls the back bumper (don't want to break the wires).
-disconnect the connectors from the license plate lighting and parking sensors (if any).