Vance & Hines FP4 Fuelpak Auto Tuner For Harley-Davidson

Vance & Hines FP4 Fuelpak Auto Tuner For Harley-Davidson

Take command of your Harley-Davidson’s full performance potential without a trip to the dyno shop. The FP4 puts professional-grade fuel tuning and real-time engine control directly in your hands through an intuitive smartphone interface, transforming every mile into a precisely tuned, more responsive riding experience.

Key Features

• Vast library of dyno-tuned maps for Stage 1 and select Stage 2 applications
• Smartphone-controlled tuning via rebuilt Android and iPhone apps with updated rider interface
• Upgraded live sensor data display with additional gauge for monitoring critical engine parameters while riding
• Read and clear diagnostic trouble codes directly from your phone
• Built-in decel pop reduction tool for cleaner off-throttle behavior
• Throttle progressivity feature with 4 preset configurations for improved fly-by-wire response
• Performance data recording with GPS-based ride mapping via onboard phone GPS
• Full ECU table access including VE, target air-fuel ratio, spark advance, idle RPM, and rev limit
• Smaller and thinner form factor than the previous-generation FP3

Technical Specifications

• Dimensions: 5.5″ x 5.5″ x 1″
• App Compatibility: Android and iPhone
• Connection Type: OBD diagnostic port plug-in
• Tune Coverage: Complete tunes for Stage 1 (intake + exhaust); Stage 2 tunes for SE 447 and SE 462 cams only

Fitment Notes

• Not compatible with CVO/SE models in specific year ranges — see fitment table for details
• Throttle progressivity feature is not available on models equipped with the RDRS system
• Not compatible with certain aftermarket head units that display sensor data via CAN-bus connection
• Due to state regulations, this item cannot be shipped to customers in California
• This item is non-returnable; manufacturing defects must be addressed directly through Vance & Hines
• Review the Fitment tab for complete year and model breakdown