haha... i used to be in ur situation too... but at last i did mine...
the CAI hose cannot pass through the front like other cars... must go through the sides under the fenders...
do u notice there's a small round hole at the sides jz behind ur headlamp??... get ur CAI hose through there, vertically going down the mudguard, then reroute it back up through the sides of ur bumper.... some told me they dont need to open the side fenders but from what i see, u need lo... once u open the fenders, u'll get the idea of how to route the CAI hose out...
in this way, u also dont have to worry any water being sucked up coz water can hardly go vertically up the CAI hose...
i try to post up pictures next time... wish u luck....