i searched zoodad under 6.0 upgrades and aftermarkets read all about it today and have arrived at the following conclusions.
Which, btw, lead me to the driveway to pull the grill off and bore (2) - 3.25" holes in front of my intake as per Zoodad's mod late this blustery dreary cold afternoon.
i've read hundreds of posts today both pro and con and respect both sides.
but the biggest contributing factor that lead me to open up the front of the truck was what my marine diesel mechanic proselytizes; diesel engines need to breath
yeah, when they're driving along 50 - 60 mph + there's no doubt there's plenty of airflow up there in the engine compartment, no question about it, not to mention the turbo's job working properly of course.
Yet when my truck is stopped at a red light or in traffic for extended periods, etc., I wouldn't want, what one other poster said back in 2007 "a hand in front of my face keeping me from breathing"
So with that, I don't expect faster spool up, better fuel mileage, lower EGT's etc and won't be disappointed if i achieve them or not .
I'll just change my Motorcraft airfilter more often.
And BTW, I didn't see any bug carcasses smashed up in the area where I bored the 2 holes.
Knowing a bit about engines if rain is sucked in to the intake at that velocity it would be converted to vapor which would be passed through.
Nothing like driving your truck down the launching ramp into full submersion while she's running.
As I said, not to beat a dead horse but IMHO, you cant go wrong. That is, if you are diligent with your maintenance.
And if you own a diesel, that goes with out saying.