If you're nt using synthetic oil I suggest to do so now. Another reason is the air flow in those engines is pretty high & the stock air filters get dirty pretty fast, suggest changing them every 2,000 mile.
If you're running air conditioner alot that is another reason, it robs electrical current from your ignition system, did you have problems w/ your A/C Yet?
Those cars w/ that engine is common all thing suggested above has been knowned to help
Good Luck