Vance & Hines FPX Tune For Harley The FPX Tune from Vance & Hines represents a significant advancement in fuel management technology. This system offers users immediate access via iOS or Android apps to an extensive library of over 40,000 in-house dyno-tuned maps specifically designed for stage 1 performance upgrades. Included with the product is access to Vance & Hines' renowned customer support. Additionally, users have the flexibility to add or upgrade FPX Tune units to incorporate FPX Trak & Tune capabilities whenever desired, subject to an upgrade fee. Features: Flash Tuning Capabilities for Performance Upgrades Extensive Library of In-House Dyno Tuned Maps Works with iOS / Android Operating Systems Upgradeable to FPX Trak & Tune at Any Time Made in the USA