Hi guys, new to the forum, used to be here everytime I had a problem with my old 04 acura TL, and now that I have a 15 TLX, will continue here.
Anyway, couple of things that I haven't found here, that you might be interested:

You can modify how yours stereo sound in the dev menu, found in the forum.
You can update your system, without having to take it to the dealer because...

You don't need a navi, radio code anymore!!
After the update , the screen will reboot, and will ask you for the code, but you just press the power button for 2 seconds, and bam! back to normal, it even says itn the screen itself.
And confirmed by Acura customer service: TLX doesn't need a code anymore.
also, after the update , your setting will be gone, and phnes/devices paired , have to be redone again...