JB4 Instructor on PCJB4 Instructor, coming from the developer Rdz Development, is running on Android systerm in the past. No more eyeing the battery or frustrating calls at the wrong time any more.Just enjoy JB4 Instructor PC on the large screen for free！JB4 Instructor IntroductionJB4 Instructor is a mobile guide which helps you to understand every menu and function of your JB4 piggyback from Burger Motorsports.Navigate through the menus displayed in the speedometer and rev gauge and read what every function does for a better understanding. Exploit all features and get the best performance .As simple as it looks. As similar as using your steering wheel controllers.JB4 Instructor is not affiliated with Burger Motorsports.