[Official] Which 1st mod(s) for my Z thread.

[Samjam1]

Hey guys, my Z is pretty new and I was just wondering what some new beginner mods would be. Obviously not trying to replace the exhaust or anything SUPER to the engine just yet but what are some minor engine mods I can make to increase my performance, make the engine a bit louder and maybe even a bit more fuel efficient, if any of those are even possible. And then if I could get a few appearance mods that you guys have really like as well. Thanks a bunch! Trying to start off small and say maybe spend $300-$400 a month just to budget things out for now.