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 & L.E.D. display. Uses carburetor tuning logic for easy-to-understand fuel adjustments. If you plan to modify your engine, then our 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.