There are free programs out there that will let you view things that are happening but not change anything. You still need the cables which can be expensive.
I have the DHP PT. Bought it used for $200 and it's probably the best $200 I've spent. Plus I can tune any GM V6 car from 97-05.
ls1m is a free program, you just have to buy a cable and a palm to use it.
UV Scanner is free and requires no emulation:
uvscanning.com • View topic - Public Release >>>>>>>>>>>> [DOWNLOAD HERE] <<<<<<<<<<<<<<
UV Scanner is free and requires no emulation:
uvscanning.com • View topic - Public Release >>>>>>>>>>>> [DOWNLOAD HERE] <<<<<<<<<<<<<<