I know the PiP is not the car for serious speed, but has anybody found any ways to increase its performance? I'd like to spice up my DD.
You should check out the Gen3 Mods and Accessories forum.. Anything you can do with a regular Gen3, you can do on a PiP. There's only really suspension upgrades (rear sway bar, mid under brace, front under brace, strut tower bar, front sway bar, coilovers/springs, etc). It is possible to find a Japanese exhaust for it if you really want one.. Oh, and there are intake kits for it.. The HKS Racing Suction kit comes to mind. Probably won't make much of a difference, but it does look cool.
you can put bigger wheels on and an extra battery pack. i've seen some threads about a performance chip for the ice.