The Vance & Hines FP4 brings our legendary fuel tuning and performance to your Harley-Davidson, with all new features, and the ease of use you expect from Vance & Hines.

With its state-of-the-art Bluetooth enabled app-driven technology, FP4 empowers you to do 100% of your tuning right from the palm of your hand with your mobile device, backed by industry-leading customer support, all while maintaining 49-state emissions compliance and thereby keeping your Harley-Davidson factory warranty intact. See Additional Information below for fitment.

• View live sensor data, read and clear trouble codes, utilize a live sensor data display and offers best in industry support from our FP4 technicians, all from your smartphone
• Legendary fuel tuning and performance to your CANBUS Harley-Davidson models, with all new features, and the ease of use you expect from Vance & Hines
• Live Data in the FP4 App has been upgraded with a whole new look, and an additional gauge to track more crucial data while you ride
• Built from the ground up Android and iPhone apps feature a new rider interface and are easier to navigate and use than ever before
• The units LEDs have been simplified so you know exactly whats going on between the FP4 and your motorcycle
• New FP4 hardware is smaller and thinner than the previous generation electronics product
• 49-state emissions compliant