pcmhacking.net

I'm interested in logging information from holden vz ecu's. I have tech2win & mdi (genuine) i also have access to all security codes & programming files. i am just after a setup that will monitor the communications between tech2win & vehicle to get an understanding what is being sent & what is recieved. I hope someone could point me in the right direction.
Thanks

Can you be more specific? There are both ALDL and either VPW or CAN data busses in the VZ. Flashing PCMs on VPW can break some of protocol spec and needs different tools.