Yes, you do have a MAF sensor and you can put on a CAI. Although, if you want to run it behind the front fender you may have trouble if it's an automatic.
IF you have enough money ($189-$219)buy one already made!
Here's a link for a CAI made for the Accent by KORE
www.kore-motorsports.com
Go to the application list to see prices and colors available.
Here's link to what they look like
http://www.fxtreme.org/faq/tiburon/manufacturer-doco/KORE/cai.html
www.mhptuning.com
www.hve.com.au
-both have CAI's as well.
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Going from point A to point B in a Hyundai! I may be old school, but have been driving Hyundai's for many years!