The Big Gun Rev Box enhances the power curve and adds 2 horsepower. The Big Gun Rev Box is designed to enhance the rev limiter from 1000 rpm on most models to 3000 rpm on others. By allowing the RPM of the machine to go over its normal low settings, it allows the engines to build the actual horsepower that they were designed for. By moving the rev limit up Big Gun has been able to pick up 1-3 horsepower depending on the model. Adds up to 8-10% more horsepower once snapped in. Comes ready to install and go. Allows RPM to rev out much higher than stock while advancing the timing for a bit more torque on the bottom end. Get yours today don't let the competition pass you by!