The car gauge app available from the itunes store utilizes an OBDII Bluetooth adapter, but I can't configure the Bluetooth address. How can I use this app I just installed, it has to have the Bluetooth address configured.

I saw an advertisement in a car magazine for an app that would provide gauge read outs available for download from the app store. So I went to the app store, found the app, downloaded and installed it. I then purchased the Bluetooth OBD hardware adapter required to transmit the data from the car to the phone. The adapter has to be configured for the app to communicate with it. This is an apple approved app. But everything I've read says that apple will not allow iPhone owners to make any adjustments to their Bluetooth addresses. And that iPhone only provides Bluetooth connectivity to basic head sets speakers and audio formats through the car stereos ( but no audio streaming). 
Bottom line, apple approved app and hardware that can't be configured unless I perform a jailbreak? I don't want to JB the phone but it seems that apple has left me with no other options. I've already invested time and money on this software and hardware. Their must be a legitimate way to use this apple approved software. Does anyone know how to adjust/configure bluetooth settings/addresses?

Generally, if you have to enter a code for bluetooth, your iPhone will ask you to enter a 4 digit code when pairing.  Check the instructions for the device you are trying to pair with your iPhone.  The instructions should give you the code in the pairing instructions, if a code is required.

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