I have a strange set up. I have an after market head unit in the rear boot of my truck with an ir repeater run up front for a remote. The issue is changing inputs I have to get out the truck to do that. I canít and do not want to change the factory unit! I was wondering if using a pioneer and the pioneer sync app would let me control those functions from the android phone? Or are there other radios and apps that work better? Iím looking to see who used them and what the real world use is like.