That cable is just for the CABLE. No transistors or circuit inside to allow it to talk to the laptop or ECM.

The best setup for real-time emulation is the AutoProm that Scott has. The only reason I got rid of mine was because it can't burn the big chip that I am now using to stack multiple files on. Otherwise, it's an excellent device to allow emulation AND datalogging at the same time.

I'm tired of experimenting with the FTDI chips. I think I'm just going to order a cable from Moates.