dude monkey check out www.datalogger.com
, using a palm pilot to tune has been around since palms came out.
i have the obd2 cable, software and palm for about 250. it doesnt have a nifty graph but it measures just about everything there is to measure on your car, and if you want a fancy graph you can export the log files into excel and make a graph the 2 minute way.
i cant wait till i get my new setup, Big 16G turbo, 650/660cco injectors, 190lph pump and safc2 to tune.
1998 Eclipse GST Spyder - 14b turbo | 3" Catback | Evo8 BoV | 170fwhp if that
2003 Redfire Cobra - 448whp/435wtq - Sold