Gene,
On the 160, just pair your N7 with the Dual. Then open our app and touch Menu -> About -> Connected Devices and set the Wireless Device to Dual XGPS. This should be all that is needed. There will not be any "data" or device info in the Connected device window. If you are not seeing an improved GPS signal in the Fix Quality instrument, then confirm you have a Green GPS light and a Blue Bluetooth light on the Dual.
If you are not, you might try downloading the Bluetooth Helper App from the App store, however we have not found this to be needed. Also, make sure you are updated to the latest 8.1.68 iFly Version. I hope this helps.
Also, I think Ben has been working with you on the phone. We'll get you working.