HE MIGHT HAVE USED A HARLEY PRO TUNER SOMETIMES CALLED A SERT THAT STANDS FOR SCREAMING EAGLE RACE TUNER
http://www.harley-davidson.com/store/se-street-performance-tuner-kit
The Screamin' Eagle® Street Performance Tuner is designed to simplify management of street-legal performance calibrations as EPA-compliant performance modifications are made. It easily allows the rider or technician to view and evaluate engine operating parameters.
Upload the calibration that provides the best performance mix for your mufflers
Add a Big Bore Stage I or Stage II kit later, and simply download the proper ECM calibration to match the model and hardware
Kit includes Vehicle Communications Interface module with on-board memory to record up to 15 minutes of run-time data
Module will store information on up to 27 variables that can be downloaded to your PC via an optional USB cable (sold separately)
Ability to view the bike's air/fuel ratio, O2 sensor readings, engine speed and temperature, RPM and vehicle speed, throttle position, spark advance and much more
Online access to the latest factory calibrations, so you can load the most up-to-date parameters whenever you have your bike serviced
Software download and updates can be found at –
www.h-d.com/streetperformancetuner