ahmad bhai, i never ever took away any honda car from showroom unless they installed the filter in front of my eyes. Its NEVER been there in any car I got, 2002 civic, 2003 idsi, 2006 vti oriel, 2007 reborn ivtec, 2010 reborn vti oriel and now this city 2012.
Ur city was a surprise, otherwise we would've surely advised you to get it installed the moment they hand over it to you.
get it installed asap from a honda pit stop as its summer and AC use is must. 