i highly recommend paying the 150 for crome pro. the freeware doesnt allow you to datalog in crome. You have to use an alternate program in order to datalog.

you need the following parts from moates:
Uber1 chipping/socketing kit
Ostrich
HULOG datalogging cable
laptop (256k and 800mhz processor)
and a wideband o2 kit

you can download crome from www.tunewithcrome.com

I dont recommend tuning the car yourself if you have no idea what you are doing. It's really simple to figure out though if you just start reading about it and playing with the program. I been reading about it for 2 years and i just started Tuning this past week on my car and my friends cars.