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 our Juice Box is a must. This easy-to-use control unit plugs directly into the OEM wiring harness between the stock ECU and fuel injectors providing precise control of the engines fuel management system. Allows addition of fuel required with engine modifications without upsetting stock fuel map Integrated buttons provide easy adjustment and fine-tuning of fuel delivery curve without external programming devices LED lights indicate fuel delivery settings while tuning Wont interfere with bikes stock sensors and inputs Increases horsepower Improves throttle response Installs in minutes New third generation technology No computer needed to adjust your JUICE BOX Plug-in technology (Doesnt interfere with stock ECU map) Integrated buttons provide easy adjustment