my engine in an 07 aveo 1.6 seems to miss a beat when idling does it need a tune or is it normal?

also it seems to make a tick tick noise when running under load, but its not consistantly going all the time only now and then and at different rpms

i was thinking that my cold air intake may have knocked the throttle body around a little because its a bit of a tight fit.

so do i require a tune up, new sparkies, or something else?

any help would be great!