Has any put an Aeroturbine muffler on there dmax. What kind of results did you see with it? My dad put one on his cummins and he instantly got 2 mpg better and thats no lie. I just wonder if I could expect the same results on my dmax?

If your Dad had a stock muffler, and switched to a more free flow type muffler, chance are you will get an increase in MPG with any free flow over stock, in any truck you install it on.

I did add one and got 1 mpg on my DIC right away. Not sure if it was the 4" pipe, lost of my 9 lives Kat or the new muffler. At this point really don't care just like the performance and MPG increase, Lower EGT's its all good