Your electronically fuel-injected motorcycle / ATV can now boast improved drivability and more power with the Two Brothers Racing "Juice Box™" fuel controller. The Juice Box™ features simple plug and play installation and quick and easy adjustment. No need for computers and complex maps, just use the integrated buttons and LED display. Uses carburetor tuning logic for easy to understand fuel adjustments. If you plan to modify your vehicle then the Juice Box™ is a must. This easy-to-use control unit plugs directly into the O.E.M. wiring harness between the stock ECU and fuel injectors providing precise control of the engine's fuel management system.