I kinda did the same thing before I got my CAI. My check engine light came on once and my friend at work reset it. The only thing I could suggest would be to un hook your battrie for about 15 min. That will reset your ECU to stock...but I can't promise it will not come back. The problem isn't your MAF sensor the problem is your AFR (air to fule) is off now and your MAF sensor is throwing a flag up. The sensor is doing what it's supose to...no need to reset it. I would try maybe a smaller filter...did you check all the band clamps to see if your leaking air...or in this case sucking it in.....let me know if this helps you I would also suggest posting in the Duratec section I hink you'd get a bit more feed back from them.
Team Duratec #36
L.O.T.H #69 baby