Yeah - I asked because it seems that everyone with a CAI is more vulnerable to getting the filter splashed, and, once that happens, the water is delivered right into the engine. I've seen TOO MANY hydrolocks with CAI's, and spent countless hours drying cone filters on engine blocks/manifolds, etc...to get people back out of the boonies.
I DO enjoy the giant gush of water that shoots up from the spark plug holes after pulling the plugs and hand cranking the engine though.
I have a dash cut-out installed on my other rig just to prevent water crossing fan blade splash, and I ALSO have a snorkel, AND have also Si'd the entire electrical system, etc.
The "splash shields" some CAI come with are all but worthless it seems...as they are designed to take cold air/water from the bow direction anyway.
I haven't done much water in the JK, as its my wife's DD, and when we off road it, its on rocks mostly....but the curve of the hood/laminar flow effect decribed seems very likely, and would explain many of the hydrolocks described.
Perhaps a baffle on the underside of the hood, to break the laminar flow/prevent this flow from heading straight into the intake would be a good idea at a minimum.
I'll take a look at it and see what makes sense.