can an lx or dx or ex etx cai fit on my hx enigne? sorry for the ignorance

no.

aww suck... beause all the cheaper ones on ebay are for like ex and stufff, damn my hx!!

EX cold air intake will fit for an HX....its the same exact thing. A lot of sites just say "EX" cold air but some have EX/HX listed. So an intake for an EX will work perfectly on your HX. I have a injen cold air intake on mine.

ive seen the ex/hx thing, i just wanted to double check before finding out im retarded, thanks