heh heh. That was some funny shit

Seriously though, the posts so far are right. i/h/e will get you as far as you want to go--investing any more money in your D-series is probably a waste. In general, the EF civics just aren't big powerhouses. They weren't designed to be, and those that end up being 10-second monsters do so with several thousand invested.
Now, if you're question was instead "how can I make my car more fun to drive?", then my answer is invest the couple hundred dollars it takes to get strut tower bars, front AND rear sway bars, and/or a quality suspension kit. Cars are a lot more fun when they feel like roller coasters :yes: