You can add whisper mode to any tune, so your 80dd you can have it an 80dd whisper mode, that is what I did, and fyi, the difference between 100 and 120 is not going to be much on stock trucks, but if you can't do the 140, then the 120 will be the most powerful. if you can do the 140, I would recommend that instead of the 120. I added whisper to the 65tow as well in case I decide to take my 7'interior height trailer through a drive through too
