Big Gun 13-15 Polaris RANGER XP 900 Power Box

Big Gun is known for making performance exhaust systems, and their TFI (Throttle and Fuel Injection) Power Box is a natural extension of that focus. This module is designed to give your 2013-2015 Polaris RANGER XP 900 an effortless performance boost by fine-tuning how the engine handles throttle input and fuel. It’s a plug-and-play unit, meaning you don’t need to be a computer expert to get it working; it connects directly into your EFI system without altering the stock ECU map.

What this means for you on the trail is a sharper throttle response, making the RANGER feel more immediate when you press the pedal. You’ll also notice smoother power delivery, especially in the mid-range where you often need that extra grunt for climbing or hauling. The Power Box is built tough, with rugged construction and weather-resistant sealing to handle the dirt, dust, and moisture that powersports vehicles encounter. It’s a solid option if you’ve already upgraded your exhaust and want to get the most out of your RANGER’s engine.

Installation is straightforward and can typically be done in minutes. The integrated buttons on the faceplate allow for easy adjustments without needing a separate computer, which is a nice touch for on-the-fly tuning. Just remember, this unit is not CARB approved and cannot be shipped to California.