Well what’s something I should start with performance wise? I planned on the cold air intake then a catback. I’m up for constructive criticism though!Save your money for something else worthwhile, especially if $100 is a "tight budget".
You're not going to see any significant power gains.
Ditto for regular maintenance.If you have the urge to make some changes, I'd start with addressing regular maintenance items.
I'd have to agree, especially not on that motor or generation Civic.To be honest I wouldn't install an intake, header, exhaust expecting any effect on performance.