Unleash your ATV's full potential after you have installed an aftermarket exhaust by pairing it with the Big Gun TFI Power Box.
The Big Gun TFI Power Box not only gives your ATV a power boost it also improves throttle response to get those ponies working quicker.
Simple plug-n-play installation means the TFI Power Box will get you moving down the track or trail in minutes. Big Gun kept the TFI Power Box from interfering with the stock ECU for better efficiency.
Adjustments come easy with the TFI Power Box's integrated face plate buttons that do all the tuning without the need for a computer.
When this unit is plugged in it will still retain the stock EFI map. It is a piggyback unit that will allow you to add or remove fuel in the low, mid or high RPM range to compensate for additional flow characteristics when adding aftermarket intake and exhaust systems. You can select which RPM range you need to modify and then select how much fuel you would like to add or remove. You must have a general idea of tuning in order to set the amounts to the correct value for proper operation of your engine. Typically when adding an exhaust system, bikes will run lean so more than likely you will be using this to increase the fuel output of the injector to correct the lean condition.