Everything mountainbike said about the coils is right on.
You said that you took it for a “tune up” but the term tune up refers to nothing in particular. Did this tune up work include new spark plugs? If so then, I’d wonder about what kind of plugs went in. Not all plugs are the same and some cars just don’t get along with certain types & even brands of spark plugs. If the plugs are new, find out the brand and type & report.