Jaho1979 and Baseballfanz got you going in the right direction without going broke. S/C is nice, but expensive and still a bit radical. Study hard before buying the S/C. (We all want one, we just won't admit it to ourselves)
Check people's signatures for idea of what everyone does. Search on subject of CAI, Catback or Exhaust, Cipher, and TBS. Check mfg website to see results from dyno's, just don't add them all up to get a cumlative effect. It's a great hobby, meet some others in your area. We've got a nice club going on in the Baltimore area. Welcome to TT.