If you have a connection issue with your device and your computer can't connect to your MPVI2/2+/3 or RTD/+/3, and gives a message, "Please connect an MPVI2 or RTD interface" or something similar, you will need to download and install the drivers from HP Tuners.
1. DOWNLOAD - Use the link here Drivers, and click on the option "Download MPVI2 Drivers" (same as RTD).
2. INSTALL - After it downloads, open the file to install the drivers.