congrats on a quite nice 986!!!
did you name her yet?
i 2nd what unclekrakle suggests above. do an oil change and have the dealer look under the hood. check the other fluid levels as well. if you've got a decent relationship with the local wrench, go out on a drive with him (/her?). with their experience, they may know just by the sound of the idle.
we've got pretty stable rides. some things might take time to see. i've had 2 'check engine' lites and my car still drove fine until i got it to the mechanic.
drive it kool!
