xjman is right. do and oil change at 1k miles and 3k regularly after that. if you are going to do any engine mods, do it all at once and get it properly tuned.Whatever the manual tells you is the only advice that is correct. Any information contrary to that is pure speculation and wrong. Welcome aboard.
but if you are not ready for any warranty issues, just a catback exhaust, suspension upgrade for better stance and fix that awful gear box.