Big Gun 05-14 Polaris SPORTSMAN 800 Power Box

The TFI (Throttle and Fuel Injection) Power Box from Big Gun uses third-generation technology to make real changes to how your EFI unit performs. It's built with integrated faceplate buttons, so you can easily adjust the EFI settings right on the box itself, no computer needed. This means you can fine-tune your throttle response and fuel delivery for a smoother power curve and better mid-range torque, all while keeping your machine reliable.

This unit is designed to be a plug-and-play module, meaning it installs in minutes and doesn't interfere with your stock ECU map. It's highly recommended if you've already upgraded your exhaust system on your EFI unit. The construction is rugged and weather-resistant, so it's built to handle tough conditions out on the trail or wherever your Polaris takes you.