tom:
since i have an extended warranty i talked with my dealer serv mgr before making my mods to engine. What he told me was air in & out where OK & wouldn't void the warranty unless they could prove on the CAI that it had sucked water into the engine & i know with the airaid using same air intake as standard intake would be hard for them to do. The main issue with the airaid is that it covers the dipstick for the tranny fluid, so you got to move it around to check fluid. Talking from experience of a dad who worked for a dealer, they love warranty work. So only issue is when they have to get Ford involved. That's what I got from my dealer & they are real conservative. As a past show car judge & now displayer it's an absolute must have.
mikev