Kenworth T-800 LOUD Rolloff

I assumed this might be the case... Essentially, I find my exhaust is lot more "raspy" and "throaty" in the higher rpms, I am looking for a "deeper" noise, and also a more prominent turbo "let go" similar to these two videos: Honestly, if you have any suggestions as to how to achieve that "deeper" exhaust as in the videos, thats exactly what I am looking for. I thought maybe the difference was because I don't have du

Discuss this in the forum topic Kenworth T800 project.. am I dead in the water?.