nci 1/4 turn install thread
place car on ramps or jack stands.remove under tray and diffuser.
remove 4 bolts from shear panel closest to the edge.flex shear panel down to
remove clip nuts.(be careful of sharp edges on shear panel)the holes in the shear panel that the 1/4 turn fasteners go through will need to be drilled out to 5/16.you may need to raise the car higher to get the drill under the car.you can slide a piece of plywood in between the side sil and shear panel to protect it.once the 6 holes are drilled out.install the 6 clips that are marked for under the shear panel.
makeup your clip checker.the little piece of .050 aluminum in the kit.place a pin in the hole.place a delrin washer on the pin.use a 7 or 8 mm deep socket to tap the washer past the rib on the pin.this represents the panels.so it can be used to check the grip range of the clips.it saves a lot of time not having to install the panel to check the clips.you may need to adjust the grip range of the clips.if they need more locking force you will need to spread the clip.what i use is a chisel that fits between the sides of the clip.then i insert a screw driver on the back side of the chisel to pry with.if the clip needs less locking force or the pin wont engage you will need to pinch the clip.i use a pair of plyers for that.now check the 6 clips under the shear panel.once the lock is good on all 6.install all the pins with the delrin washers using the socket to tap them on.place a block of wood on the floor to protect the pin and panel.test fit the under tray to make sure they all lock good.once you are certain that all 6 latch.then go ahead and bolt the shear panel back up.the under tray can be installed now.
now replace all the clips on the diffuser,rear panel,outer edges of clam.(these are marked in there own bag)check with clip checker and adjust as needed.now install all pins in diffuser.use a block of wood to support the pin while you tap the washers on with the socket.once all pins are installed and all clips have been checked.now test fit the diffuser.start by installing the 2 threaded bolts finger tight.lock a few of the fasteners on the under tray to diffuser.now lock a few on the rear panel.then go around and make sure they all latch well.now you can install all 4 of the threaded bolts and tighten them.go around and latch all the 1/4 turn fasteners.the first time latching them it will be a bit tricky to get them all lined up.but once you do.it will be a piece of cake from now on.
edit.i just installed jims washers on my car.i found it easier to not use them on the two that go through the clam on the outside corners of the diffuser.with the washers there it makes it hard to get the pin started in the hole of the clip.the white nylon washers are provided to increase grip range for a tighter lock.
Last edited by kmt63; 04-18-2010 at 06:21 PM.