Excuse my first DIY...had trouble installing this myself since it was small space when it comes to the r18 engine follow robs DIY for TBS gasket so you dont get the check gas cap light on u iMID. this is a must. http://9thcivic.com/forum/threads/r18-p2r-tbs-with-gasket-installation-tips.9871/ First up take off this tube off your intake so you can take off the top half of the intake. It pulls right off Next take the this screw out so u can pull the intake off the rubber tubbing. just a small philipps should be fine. Now remove the intake clips and pull of MAF sensor on top of the box. shown in previous photo..that wire thats hanging on top. its going take some effort to pull this off but be careful. The rear is just a clip on to the box. now use some pliers of some sort to hold down the clip and pull this hose off the TBS Now take the four 12mm bolts of the TB and the TB should be able to pop out. when you take it off it should look like this with the TB hanging... now install in this order put TBS then Gasket in that order then TB. notice the cut i made by following ROBs DIY. i used a exact o knife and a dremel to be easier. Reverse all the installation and your good to go...torque at 20lbs for the TB bolts.