After my tune up, Changing spark plugs, sprayed air plenum holes with carb cleaner and wiped it off as far as I could reach, also sprayed and cleaned the plenum, throttle body, iac, changed the air filter, it had a hard tissue stuck in the old one, with alot of oil deposit, now it has a higher, stronger pitch idle that sounds preety clean, but it's not the same as when it was before, at factory specs I guess, I can't remember what it sounded like when it was new, Should I be checking or adjusting anything, if so what things should i look at?


Thanks in Advance,