scerbz

I have 2013 lancer and cant find much on how tos or whats really needed for service. Particularly changing cvt fluid, and coolant. I have a good history of working on my own vehicles, just know cvt is much different. Is there other things that ought to get done as i am approaching 80,000 miles? Also i have heard things about the valve adjustment service, how? Next, i have added an intake and high flow muffler, how does one 'tune' it as suggested after adding such things? I have been told that it has a timing belt, and also by others been told timing chain. Whats the real deal? I will appreciate all the help so thanks in advance