You connect the to the wideband via Tuning Device like the Xcal.
Or if you gauge has an output like mine, you can use their software.
http://www.innovatemotorsports.com/support/downloads/LogWorks3Setup.exe
Here are the instructions again just in case:
Remove the oxygen sensor from the exhaust and expose it to free air (outside of the exhaust pipe) for calibration purposes:
1. Connect the LC-1 to 12V from the vehicle and switch it on.
2. After the sensor has warmed up, either press the pushbutton or connect the calibration wire to ground for three seconds and release.
3. After the calibration is complete, switch the LC-1 off and wait for 30 seconds before you start the car.
Also their support was really fast in responding when I sent them an email.
felipe@innovatemotorsports.com