The JY-MCU module with the resistor and diode that I mentioned was found inside a Red Devil River cable.

But yes, you can find the module and a 10' USB extension cable for $5 and wire the module...

Yes, if you buy a complete cable it will work without modifications. If it doesn't, you'd return it for a different one.

I'm not sure where you're looking but http://www.reddevilriver.com has a...

EEhack will flash, so you can use it to do all the PCM connected work. You need Tunercat or Tunerpro to make tuning adjustments. You could use Tunercat to flash too, but it won't scan or log.

EEhack and Tunercat are 2 completely different programs that do different things. Tunercat lets you adjust parameters and EEhack lets you scan and log the operation. I think you meant Tunercat vs...