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Take absolute control of your motorcycle’s performance with the next-generation Vance & Hines Fuelpak FP4 Tuning Module (Part #66045). Engineered explicitly for **2014-2020 Harley-Davidson Touring models**, this ultra-slim ECU flasher recalibrates your bike’s factory fuel map via a secure Bluetooth connection straight to your smartphone. Whether you are upgrading to a high-flow air intake, bolt-on slip-on mufflers, or a full Stage 1 exhaust setup, the FP4 ensures optimal air-fuel ratios, enhanced throttle response, and maximum power delivery.
Built from the ground up to replace older, bulky tuners, the hardware casing of the FP4 is significantly thinner, making it easy to tuck discreetly under your Harley's side cover. Operating via a fully redesigned iOS and Android app, riders get instant access to a massive, in-house library of dyno-tuned maps created by Vance & Hines technicians. Simply plug it into your touring bike’s 6-pin OEM data port, pair your device, select your exhaust configuration, and flash your ECM in minutes.
ECU Lock Warning: Once an FP4 tuning module is plugged into a motorcycle and flashed for the first time, it permanently mates to that specific machine's unique VIN. It cannot be cleared or reused on a different bike. Your factory OEM backup map is securely stored inside the device so you can flash the bike back to stock configuration at any time.
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