Gives you the power to control every aspect of your motorcycle's tune, view live sensor data, read and clear trouble codes, utilize a live sensor data display, and support- all from your smartphone FP4 upgrades include the latest Bluetooth technology, smaller size, upgraded app, and tuning capability for new Harley-Davidson models LEDs have been simplified so you know exactly what's going on between the FP4 and your motorcycle Vast library of available dyno-tuned maps 49-state emissions compliant. FP4, 21-23 M-EIGHT
