I would like to use my iPhone to Stream Music to my Car Stereo via Bluetooth. BUT i don't wan't to use it to take calls.

There was an APP for iOS 4 and 5 which let my choose which Bluetooth Services I wan't to use for an explicit Device.

Bluetooth Service Manager: Enable/Disable Bluetooth Services: A2DP [Cydia]

Does anybody know if there is such a Tweak for iOS 7?!