In-Cabin, on-the-fly power adjustments can be made to accommodate your driving needs. Select one of four power settings on the in-cab LED control switch or control the module remotely via the free iOS or android app. The smartphone connects to the module via Bluetooth and displays engine parameters (MAP and engine load). This Power module have 4-power settings loaded and identifiable with the LED light on the switch or smartphone app. Stock (Green), Sport (Yellow), Sport+ (Orange) and Race (Red). The SCORCHER BLUE module is Bluetooth 4.0 capable and can connect to most iOS or android device. The Bluetooth connectivity allows the control of the module while being in the vehicle cabin without running any wire through the firewall. The aFe POWER SCORCHER BLUE app is free on the APP Store and Google Play store and allows the smartphone device to become a handheld remote for the module. It also displays turbo boost gauges and engine load, allows you to customize each power mode, upgrade to the latest revision and even measure 0 to 60 and mile times. aFe POWER does not recommend using the SCORCHER BLUE module with any other tuners or modules. aFe POWER recommends that only Sport or Sport + settings are used during towing.