My neighbor has a 2001 Duramax with an edge juice box and a 4 inch exhaust. He says that when he takes off when the engine is cold the truck will fall on its face and die after about a mile but has only done it twice both times the engine was cold. If anyone else has any answers please let me no i also have a 06 lbz with an edge 4 inch exhaust intake and fass fuel system but i have experienced no problems .

Tell him to take the box off and see if it goes away. Edge is real good with helping people out with swapping out units.

I have had so much good luck dealing with those guys! Top Top shelf!

will do thanx alot!!!