I finally got around in making a video for this upgrade. Provides some more engine noise and throttle response etc. My favorite part is the burble it added on deceleration around 1600 RPM
Install was mostly straight forward for me. Only issue I really has was the bag bracket. Took some elbow grease but it is working now. Sorry to hear your struggles. I promise the sound will be worth the head ache!!
I have the freedom 4.5". I did the install myself. IMO it sounds great. Not Harley loud and obnoxious. No droning on long highway rides either. Here is a video.