First HD for me

[Fatbob Frank]

So it did not take long to forget about ramboxes lol I miss them but not like before.

One thing I notice with the 6.4 HD is that I do not feel it going in and out of MDS like i did in the 1500. y'all notice that too?

Absolutely...
I used to shut off MDS in my 1500 every time cause the difference was so noticeable...annoying really.
I never bother with my PW.
Even after getting rid of my factory exhaust and going to a 12" glasspack w/5" tip I can really only tell the MDS kicks on by the eco light.
Unless I'm decelerating in town...then it kind of sounds like I have a jake brake...
I think HDs must be better isolated from vibration plus the 2 into 1 exhaust minimizes the effect some...

 

[heefageLA]

Very nice truck! Im a bit biased though....

 

[Replacement]

I too have joined the club.