3RZ URD MAF Calibrator (Blank map)

Greetings-

So I've got one of the URD MAF calibrators that I'm thinking of wiring up to the ECU today. It came loaded with a 'blank' map. Will I notice any changes with the blank map loaded? How would I go about changing the map? It looks like I need a special serial port to attach to the calibrator.

I've never done any engine tuning but I would like to teach myself the basics. I have an UltraGauge, but I assume that I'll need other tools to get the data that is necessary. Any recommendations for a tool that will link up via USB port to give me AF ratios?

I should note that the only modifications on my 3RZ are the LCE headers and cat-back... but I eventually plan on running a high boost supercharger (if I ever can afford one).

 

Read this: http://www.gadgetonline.com/U-Tune.pdf