Excited expresses a feeling. Exciting describes a place or an experience. Being in an exciting place makes you feel excited.

no they are not, excited ; I am so excited about my new car exciting; what an exciting trip i had last month

Excited(简单来说只是感觉） adj. 兴奋的，激动的；活跃的；激发的；受刺激的 v. 使兴奋（ excite的过去式和过去分词） *He was getting excited just thinking about the trip. 一想到那次旅行他就兴奋。 *He's still excited because of the newness of the position. 他因为新谋得这职位仍然感到兴奋。 Exciting（简单来说是形容某个东西，如：Event，Lifestyle） adj. 使人兴奋的，令人激动的 v. 刺激（excite的现在分词） *Riding bulls is always an exciting event at a rodeo. 骑公牛总是放牧人竞技会上激动人心的表演。 *Life was now drab compared with the more exciting lifestyle overseas. 比起海外那种更富有刺激的生活方式来，现在的生活显得了无生气

yes....existing is used as a continuous present tense...and Excited is implies for perfect past tense.... for example...."I am so exciting now bcoz my dad brings me a gift, today" Excited - for exam.."I was so excited when i heard that u r come to meet me" Hope this will help you...