Bluetooth works perfectly fine here. Both on 2014 and 2015.
Someone a while back added a K&N intake of some sort and added quite the aggressive sound. So much so he later took it off.
Aggressive sounding is fine if you can turn it off. Full time gets old real quick. Last time I modded an engine for sound was a 74 dodge duster
I did the same thing. put all the mods on then couldn't stand it after a month and put it back to stock.