There is a how to on here some where. A little longer than 20 minutes depending on your CAI (AEM is the multi piece, a little harder to get lined up correctly!) but is do able in an hour or so. First time I would plan for several hours and a back ache. Well worth it though, changes the car for the better! The biggest thing is making sure the boot that attaches to the turbo doesnt have any kinks and there are no leaks! If it sounds like a super charger you will have to start over! Do yourself a favor and make sure all your clamps are turned for easier access. Also, a power drill helped with the PCM beauty cover and some other things in a big way!