Hi silverado
It only takes about 10 mins. There is the fixing bolt on the rhs front as you look at the airbox from the front of the car and you need to remove the clip (be careful, its not a jubilee type clip) holding the air pipe. You can then remove the airbox cover, 2 screws and filter, this makes seeing the removal of the air intake pipe in the airbox easier but you don't have to do this. There is a harness clip attached on the rhs of the air box on the top and then you pull upwards. The airbox has a locating block underneath at the back, there is no need to undo this bolt as it simply holds the stud to the correct position. Look down and there it is!
Mine had no visible signs of corrosion and the lube has helped but not fully resolved my issue. It would be nice to hear from someone who has had one out to see if corrosion occurs whrere the eye cant see?
Good luck
