The kit includes the Vehicle Communications Interface (VCI) module with on-board memory that can record up to 15 minutes of run-time data. The module will store information on up to 27 variables that can be downloaded to your PC via an optional USB cable, allowing the rider or technician to view and evaluate engine operating parameters. With the included software, you can download and view the bike's air/fuel ratio, O2 sensor readings, engine speed and temperature, RPM and vehicle speed, throttle position, spark advance, and many more performance characteristics. The VCI will also record and display service codes for troubleshooting and diagnostics. The '13 Street Tuner software includes impressive new features:. Smart Tune Live - a dynamic and visual method to track and capture engine data simply by running the vehicle through a range of RPM and Throttle Positions. This feature reduces the time to modify existing VE (Volumetric Efficiency) tables which are then analyzed and tuned. Smart Tune Live works on models with factory-installed O2 sensors only. Interpolation of missing data derived from recordings, which reduces analysis time by automatically generating data that might be missed in the recording process. Viewable data meters doubled from 4 to 8 allowing users to monitor more real-time data. Users can now save and restore data meter configurations which are viewable in both traditional data modes and the new Smart Tune Live. Increased sampling rate to take advantage of the faster ECM data speeds found on select '11-later models (CAN protocol). Revised tuning tree with intuitive double click features. NOTE:. Street Tuner permits limited tunability within the emissions range to optimize drivability without compromising emission levels. It also features expanded tuning options outside of the emissions range to optimize performance. For use with '07-'13 EFI Dyna, Softail and Touring models. The Screamin' Eagle Street Performance Tuner is designed to simplify management of street legal performance calibrations as EPA/CARB-compliant performance modifications are made. Once installed, the kit will allow you to upload the latest ECM calibrations for your bike's legal state-of-tune. Start with a high-flow air cleaner and Street Performance mufflers, and upload the calibration that provides the best performance mix. Add a Big Bore Stage I or Stage II Kit later, and simply download the proper ECM calibration to match the model and hardware. Plus, you have online access to the latest factory calibrations.