Big Gun 40-R54H (M4) TFI Power Box EFI Tuner for 2011-2014 Polaris RZR 800
TFI POWER BOX
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.
Features
- 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
Fitment
| Year | Make | Model |
|---|---|---|
| 2011-2014 | Polaris | Ranger XP 800 |
| 2011-2014 | Polaris | RZR 4 800 |
| 2011-2014 | Polaris | RZR 800 |
| 2011-2014 | Polaris | RZR S 800 |
Brand: Big Gun Exhaust
Part Number: 40-R54H
