Bryan L
I am not the guy making the call at the nationals. But if we were having this discussion in the Great lakes region and I am the guy making the call, It would be illegal with this sentence alone. "Air filter installations intentionally designed to create, or that appear to create a ram air effect are not allowed, even if they were OEM stock."
You can argue update and backdate all you want but at the end of the day it still is "......intentionally designed to create, or that appear to create a ram air effect". End of story.
Hope that helps from my perspective.
See you guys in a couple days
Bob