I cleaned mine last summer and didn't have to remove the bumper. Just get under the car as if you were changing the oil. I recommend doing this and oil at the same time to kill two birds with one stone. Once you get the plastic shield removed you should have enough room to undo the clamp that holds the filter to the rest of the intake and giggle it out of there. The pain in the ass is the metal shield on the intake (closest to the wheel). I remember it being adjustable by hand, so just make sure it's in the same place as it was before the filter was removed because the last thing you want is water hitting it through the wheel well. To my surprise the filter was not very dirty at all and I probably could have gone another year until I had to have it cleaned. Good Luck!