i am thinking of stacking the TS MP-8 with my power pup, has anyone tried this? have you had any good results? all the smog stuff fell off the motor
so im not worried about smoking or dpf clogging

plenty of guys are stacking the BD pup & MP-8. Most are stacking the EDGE & MP-8. I've got an IP&D 95hp module and will soon be stacking it with an Edge (especially for guages).
So far most have been having great results stacking especially with mileage.
FYI the BD PMT is somewhat available for the 6. 7L. You have to buy a 5. 9L version and you have to contact Buddy at BD and he'll e-mail you a beta update file for the 6. 7L
Anyway - you can search & find tons of info in the performance 6. 7L forum here:
6. 7L Performance Parts Discussion - Dodge Cummins Diesel Forum