My only mods thus far are the P3 gauge, but I am planning on intake, some brand performance exhaust, and a JB4 tuner.
I hate the brake pads, but they stop on a dime. They just dust up like crazy.
Someone else referred me to a product called Wheel Wax, similar thing, but I'm going to try it out.
http://www.autogeek.net/whwaxcarca.html