tune up

A tune up would be change the spark plugs, and fuel and air filter, plug in a scan tool check for pending fault codes. look at fuel trim figures and just ensure from scan tool data that the engine is performing properly. I would always change the engine oil and filter although not technically part of a tune up. Your car's engine has hydraulically adjusted valves so they do not need to be adjusted. Some service centers push for a fuel injection system flush but if the emission figures are good, fuel trim figures are good and you have no drivability issues I would just put two bottles of high concentration fuel injection cleaner in the tank.

on a dohc engine you have to remove the intake to access the rear plugs,so I would suggest replacing the intake o-rings while you are getting that done.if the labor is a little inflated,this is the reason why.