Updated my smarty software from j to M and M definitely has more power higher rail pressure and less timing clatter. I wish udc would come out for the 6.7l already... I kinda want a 12v tune
Thats a good way to need a HG in a hurry. Take it easy on the ole girl, put some 625's on there and a wastegate if you like floggin on it and lettin off just to hear the vgt
Shes went 157k on the factory hg towing its whole life. Im just blasting the soot out of the vg vains. Once Im sure I can get by inspection with full on deletes (vs stealth) ill hook up a gdp progate