Big Gun Exhaust Big Gun 40-R57G TFI Power Box for Yamaha YFZ 450R 15-17 ATV

When installing an aftermarket exhaust, proper tuning is a must. The Big Gun Power Box is a plug-and-play fuel controller that allows you to properly tune your fuel injected motorcycle, ATV or Side x Side in just minutes. Installing a Power Box allows you to get the most out of your aftermarket exhaust and increases throttle response. A Power Box helps cure the lean issue that is run into when installing a higher-flowing exhaust and comes pre-programmed with a middle-of-the-road setting already into it, making it easy to install and go ride. Increases horsepower. Improves throttle response. Installs in minutes. New third generation technology. No computer needed to adjust EFI. Plug-in technology (does not interfere with stock ECU map). Integrated faceplate buttons provide easy adjustment. Highly recommended for any EFI unit with aftermarket exhaust. For Yamaha YFZ450R 2015-2018 / Yamaha YFZ450R SE 2015-2018