Another co-worker installed a EDGE Products box on his 2002 Duramax club cab dooley today. He takes me for a ride and says watch this, floors the pedal and that truck which is almost 8,000 lbs. gets up and hauls a-s!!! I am impressed big time!! All this from a little black box that alters what the PCM thinks it sees and modifies what the PCM does to fuel timing and delivery!!! We are all mechanics so all this stuff gets us going no matter what make diesel we are playing with. They all rattle, some louder than others!! I love the loud ones, reminds me of my solid cammed big block. 
