Ah... gotcha... so its really just open element now
well i can't see it causeing any harm so long as the air is still filtered. its really the same concept as a CAI without the more efficent cone filter and smother intake pipe. also you are breating in hotter air without the rest of your box on there. thats why a lot of people who do a CAI put heat shields on there. if you don't want to upgrade it, i'd hit up a yard and see if you can find the rest of your box pieces. who knows, maybe a member who did the CAI mod can sell you their stock box if you want.