remove the old one by removing the clap off of the throttle bod. then remove the lid off of the air box. remove filter. remove the bolts int the botom of the box or under it ( cant remeber ) then remove the old air box bottom..... apply coupling and clamp to top of the intake... fit top section of piping onto the throttle body... then take the 2nd half of the piping, fit it down the hole that the old one used to sit over............. couple the two pipes together..... go under car and behind bumper and attach new filter with clamp onto end of piping and ur good to go... now dont run over any huge puddles now.... hydrolock isnt a very good thing