Depending on the model year and body type of attachment may vary.
Front bumper
-Unscrew the screws that attach the lower part (spun up).
-from the engine compartment (engine side) Unscrew the four nuts that secure the amplifier bumper to the side members.
-free guides in the wings and pulls the bumper forward (don't want to break the wires).
-remove the connectors from the fog lights (if any).
Rear bumper
-Unscrew the screws that attach the lower part (if any).
-open the trunk lid.
-from the trunk, Unscrew the screws (depending on the body number is different).
-take out the rivets that attach the angles to the wings (if any).
-remove the back bumper (don't want to break the wires).
-remove connectors from electrical equipment.
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