Inline fuel controller, this unit takes the fuel signal and modifies it based on throttle position and RPM inputs. Part number FC25009, please contact us if you have fitment questions. You can use a pre built map table or build your own custom map. Software is compatible with Power Commander, so you can download Power Commander maps to the unit Plug-n-play fuel management device pre-programmed with make/model specific maps Fully adjustable computer compatibility for ultimate tuning and personalization Use OEM-style connectors and high-quality wiring harnesses No computer necessary to modify fuel management Small, lightweight, and easy to fit on your bike Integrated O² optimizer where applicable