Big Gun Exhaust TFI Power Box EFI Tuner - 40-R50H

Big Gun

  • $263.63
    Unit price per 
  • Save $36.36

Free Ground Shipping Orders $50+
Easy Returns Secure Payments Great Shopping Experience



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 and throttle response
  • Installs in minutes
  • 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
  • 2 Year Limited Warranty


  • 2015-2017 Arctic Cat Wildcat 1000i HO
  • 2015-2017 Arctic Cat Wildcat 4X 1000
  • 2015-2017 Arctic Cat Wildcat X 1000 EPS
  • 2018-2019 Textron Wildcat 1000i HO
  • 2018-2019 Textron Wildcat X 1000
  • 2018-2019 Textron Wildcat 4X 1000 LTD

Brand: Big Gun Exhaust
Part Number: 40-R50H

Customer Reviews View on Amazon

  out of 5 stars

5 star
4 star
3 star
2 star
1 star


Have a Question?

Be the first to ask a question about this.

Ask a Question