How much of differnce might i notice with the (ME) kit on my 2004 ,3500,auto.all stock CTD.

 

What do you mean by Difference?

I straight piped my 06 (cat & muffler gone) and it is a ton louder & I feel it has more power. Only hard ###'s I have are after they were removed so I can't back that up w/ numbers. I might have lost a tad on the MPG but w/ the new intake I bet I see that back.