Big Gun Rev Box TFI Fuel Injection ATV Review

BidbyMotorsports would like to offer the all new Big Gun Rev Box TFI for the fuel injection ATV UTV off road vehicles. This ATV Rev Box will increase top end speed with a stronger spark that will make some of the biggest power gain money can buy for today’s top high performance UTV and ATV rev box on the market today. The Big Gun Rev Box IS adjustable for maximum performance with 9 way adjustable curves settings on the new fuel injection models. See the detailed mapping chart below.

They are available for the Polaris Ranger, RZR800, RVR800S, Sportsman 800, Kawasaki KFX450, Suzuki LTR450 and the Yamaha Raptor 700 and Rhino 700 models. More models to come. Visit BidbyMotorsports ebay store for the best prices on the TFI CDI

 
Overview
The TFI Over Rev Box will increase the stock rev limiter while advancing the timing on the top end to increase top end horsepower. The TFI Over Rev Box also allows the amount of fuel to be adjusted up to 20%. The units can be positioned at different settings from 0-8, allowing more fuel to be added per setting. The higher the position number, the more fuel will be delivered. Settings between 0-4 are for machines with minor modifications such as an aftermarket exhaust or air filter. Settings 5-9 are for machines with more modifications such as head work or a big bore kit. The TFI Over Rev Box can also provide a decrease in the base fuel setting by 3% on position 9.

Note: If you have a DynoJet piggyback system or an FI controller/power commander, it will have to be removed in order to install the TFI Over Rev Box, as it will already cover what these devices do.
Instructions
To install the TFI Over Rev Box, simply remove your stock CDI box, and plug in your new TFI Over Rev Box in its place. Adjusting the Fuel setting is as easy as turning the fuel adjuster screw with the supplied adjuster tool to the desired position. This position will all depend on what modifications you have done to the machine, air temperature, and the altitude the machine is running at. If the machine backfires upon deceleration, then the setting needs to be richened. If the machine lags under load, then the setting needs to be leaned out. A slight subtle backfire once in a while is ok. 
    
Settings           Setting 0 – Stock map
Setting 1 – 2%-3% fuel increase
Setting 2 – 4%-6% fuel increase
Setting 3 – 6%-8% fuel increase
Setting 4 – 8%-10% fuel increase
Setting 5 – 10%-12% fuel increase
Setting 6 – 12%-15% fuel increase
Setting 7 – 14%-17% fuel increase
Setting 8 – 16%-20% fuel increase
Setting 9 – 2%-3% fuel decrease

The all new Big Gun exhaust Fuel injection Rev Box