Fi2000 Closed Loop Tuning Module Yamaha Xv1900C Raider The engines today utilize oxygen sensors and closed loop technology have very lean air and fuel mixture settings from the factory. As those settings can limit the power produced and make the engine run hotter than earlier models. This Fi2000R Closed Loop Fuel Management System is designed to work hand in hand with all exhaust systems equipped with oxygen sensors in place. You can expect accurate adjustments from fuel injected engines air and fuel ratio resulting in an all around better performing machine and the bike to run properly. This module works as if it was a carburetor jet kit with adjustments similar to the air-mixture screw, the needle and clip positions and the main jet. Features: No confusing computer downloads to install Step by step instructions included Improves overall rideability Plug-and-ride technology with OEM-style connectors Helps keep engine cool