Your NOT Missing anything , many of these After Market Vendor - so called Performance Items - Best Be Careful
I have seen the Lower Mounted Units ~ Trying to get that Cooler Air ~ Suck in Water ~ Then there is the Dry Vs Oil .
Really Need to be Looking at the Whole Design ( Sq. In. of Media Filtering Area ) ( Media Type ) ( Water Escape or Over Loading Drainage )
Certainly how small Micron does come into Play , You have to Draw the Line on How You will Drive and Where You take this : Drive~Line
If You doing Dusty Roads in Texas for 100 Miles a week or all Clean Pavement in GA . Any of those Exposed Units at very Least should be also Bagged ..
Any of those Lower Cool Air Scope Guys , really must Watch out for Large Ponds of Water after Storms standing along the Road Side . ( Pop Up & Pop Your Motor )
Just to Mention the Basics . . coming from Guy that Ran Huge Velocity Stack on Harley - Believe Me - I got Shut Down on Highway due to Heavy Rain - Hoping for a Bridge to Hide Under ..
Certainly Trees are Out .
I even Had Dual Velocity Stacks - Shut Me Down in Freezing 15 Degree High Wind - Snow Drifts late at Night with Wind Chill around -5 ( Sucked In Bunch of Snow - Breaking Drifts ) . .
Stranded @ 11:00 PM on Edge of Road ~ Deep into Snow Drift Bank with 8K Machine many Yrs. ago Wakes You Up in Hurry . . You Hot Motor just Ate ~ Half Snow Shovel Full of Powder . .
Your Covered in White and Only 1 Reflector ( Hoping Truck of Snow Plow isn't Coming ) Round the Bend . .
Mods can and Will Cost You more then You Think ~ in a ~ Heart Beat !
Luckily I'm able to Change Plugs in the Dark , and Pull the Recoil 55 Times to Blow the Stuff from the Motor . .