X58 Flex Fuel Kit for B58 and S58 Engines

The Visconti X58 is a comprehensive flex fuel system engineered for B58 and S58 engine platforms, allowing the vehicle to adapt in real-time to varying ethanol fuel blends without the need for manual map switching. The system integrates directly with the factory ECU to optimize performance and safety across a range of fuel mixtures. Each kit includes a genuine GM Continental ethanol sensor, Visconti quick-connect fuel fittings, and a plug-and-play wiring harness. Users can select between the standard CANBOX, which provides Bluetooth LE connectivity for diagnostics and updates, or the CANBOXPRO, which adds four configurable I/O channels for expanded monitoring of fuel or coolant pressure and auxiliary control of nitrous or meth systems. Harness configurations include the PT-CAN2 for compatibility with EcuTek and MHD+ tuning platforms, or the original PT-CAN v2, which remains the sole harness compatible with manual transmission vehicles. Designed and manufactured in the USA, the wiring harnesses are constructed from automotive-grade TXL XLPE insulated wire in an ISO-certified facility. The PT-CAN2 harness is specifically designed for engine bay routing and includes an optional CCV heater jumper for stock or upgraded turbo configurations.