Hi guys newbie to the site here. The answer to my question might be out there some where but I have not found it yet. I just traded for a 2017 road glide Ultra and want to get some more noise out of front speakers (hearing not so good and like to share). If I go after market speakers and amp does the 6.5 infotainment system still need to be flashed to make it sound good? I am not the loudest speaker in the box but I have dealt with my share of stereo systems before. with after market speakers and amp all you are doing is boosting the signal that the radio is already putting out. Simply put. Thanks for any help you guys have.