Diag4Bike Parts & Accessories

Diag4Bike is a PC-based diagnostic and fuel injection tuning system for Harley-Davidson and Buell motorcycles, connecting via USB or Bluetooth for real-time monitoring of throttle position, engine temperature, oxygen sensors, and other parameters. Covers diagnosis of EFI modules, security systems, and ABS, plus actuator testing for injectors, coils, fuel pumps, and idle controls.

Spans decades of model years with support for both serial and CAN bus protocols. Workshop-level diagnostic capability for home mechanics who want to know what's actually happening with their bike's electronics.