Big Gun TFI Power Box Polaris Sportsman 570 Enhance your motorcycle's performance with the Big Gun TFI Power Box fuel controller. Designed for seamless integration, this fuel controller serves as an essential tool when installing an aftermarket exhaust, optimizing airflow and maintaining optimal fuel ratios across the entire RPM spectrum. The TFI Power Box safeguards your engine against running too lean, which not only keeps temperatures low but also preserves the engines smooth operation. Adjustments are made simple with the built-in interface, eliminating the need for external devices and ensuring a user-friendly experience. With the Big Gun TFI Power Box, riders can unlock the full potential of their machine with precision and ease. Features: Increases horsepower and throttle response Includes pre-set map to compensate for Big Gun exhausts Plug-and-play harnesses plug directly in line with your stock fuel injector harnesses using factory-style terminals No extra computer, phone or tablet required to make adjustments Installs in minutes