thats what i have ppe hot et2 and the boost controller and it is awsome,lots of power and i mean stock tranny ripping power...oh ya i just bought a ppe stage V tranny and with the 1057 sun coast converter for that truck,getting it put in next week......i do know of sevaral LBZ's runnin the ppe hot et 2 stacked with the duramaximizer but they are all runnin bigger fuel pumps,and dyno around 500+rwhp...i take it that you don't have any performance tunes on your truck yet so in that case i would recommend the ppe it is a great tuner for the duramax......good luck on your choice