The highly sought after BOSS TracKey calibration is BACK and with more features than ever before. Recently, an update to Ford software provided the inability to download TracKey at Ford dealerships. This kit comes with a Procal 2 calibration tool with the exclusive TracKey calibration and a performance air filter. Additionally-this tool offers the ability to modify tire size and gear ratio settings in the calibration. TracKey is an exclusive Ford Performance calibration that provides added functionality to 2012-13 Boss 302 owners. This calibration includes these exclusive features: Driver adjustable Launch Control, or "2-step engine speed limiting", Driver adjustable Pit Lane Speed Control, Lopey Idle. TracKey provides the customer a unique key that activates the calibration once it has been installed. TracKey is sold through Ford Performance Retailers. The calibration is downloaded via the exclusive Pro-Cal 2 flash tool that's included.