Purchase HP Tuners...
The (Optional) Pro Feature Set takes your MPVI2 to the next level. It includes a Pro-Link cable and enhanced firmware, allowing you to log additional analog signals that are not part of the factory ECM. It comes with a free Pro-Link cable, allowing you log up to two analog inputs with the Pro Feature Set. "More Pro Features are coming soon, which will be available to all Pro users!" - HP Tuners
You can always opt into the Pro Feature set at a later time.
Widebands... (required for remote tuning)
You will need a wideband to accurately tune a vehicle. For tunes performed at our shop, we use our wide-band in place of the vehicle's factory O2 sensor.
Which wideband should you choose?
If you DO NOT purchase Pro Link, you'll want one of the following two options:
AEM 30-0334 - for CANBUS vehicles only (usually 2008 and later)
Modified AEM 30-0300 - Instructions for required modification can be found below or we offer pre assembled modified AEM 30-0300 wide-bands