Big Gun 40-R56A TFI Power Box EFI Controller for Suzuki ATV/UTV

The Big Gun TFI Power Box is a plug-and-play fuel injection controller designed to optimize performance on Suzuki ATVs and UTVs with electronic fuel injection. This third-generation tuning module increases horsepower and improves throttle response without interfering with your stock ECU mapping.

Key Features:

• Simple plug-in installation takes just minutes with no cutting or splicing required
• Integrated faceplate buttons allow on-the-fly adjustment without a computer
• Third-generation technology provides precise fuel delivery optimization
• Works alongside stock ECU map without overriding factory programming
• Highly recommended when running aftermarket exhaust systems on EFI models
• Durable construction built from premium materials for long-term reliability
• Backed by a 1-year limited manufacturer warranty

The TFI Power Box is an essential tuning tool for riders looking to maximize performance from fuel-injected Suzuki machines, especially when paired with performance exhaust upgrades. The user-friendly button interface makes tuning adjustments simple and convenient.