I was wondering the same thing. As far as I've been told, the '04 LEV Accords do not have a MAF... however, I'm not entirely convinced. I was thinking I might just order one with a MAF anyway. The worst that could happen is that I'd waste a few extra bucks and just leave the intake's MAF disconnected if there were nothing to hook it to.
actually, I'm a little confused on this from the getgo. I never saw an aftermarket CAI for my 5th gen with a MAF, but I quite distinctly recall disconnecting a stock MAF when I put the intake in. I just left the wire unhooked, since there was nothing on the aftermarket intake to hook it to. Was that an unsmart thing to do?