The Visconti S58/B58 PTCAN Flex Fuel Sub harness is designed to integrate a Flex Fuel Controller ECA or ReFlex+ Port Injection Kit into your BMW.

It provides a clean and reliable connection point for CAN High, CAN Low, switched ignition, ground, and ethanol sensor input without cutting, splicing, or modifying factory wiring.

Engineered specifically for B58, S58, and X58 applications, it ensures proper CAN communication between the flex fuel controller and the factory ECU for seamless ethanol content reporting and integration.

This harness is sold in two different version, one that allows you to keep your Crank Case Heater plug on your turbo inlet, or completely remove for people with upgraded or top mount turbo kits.

This harness works with all tuning platforms and is the only harness that works on manual transmission cars.