Duramax's really don't smoke that well without a big tune with lots of fuel. That takes a tranny build if you don't want to hurt it. You can get away with a stock tranny for a while if you don't hammer it with boosted launches and WOT into 5th gear. You really want to lay some smoke buy an old 12 valve Dodge and have the P-pump jacked up. A big set of injectors and you will lay some serious smoke. Like every one says, it's a waste of fuel. 
__________________ 07 Chev LBZ CC 4x4 Tow Truck MPI twins, EFI tunes by ATP 12.6x, 106+ tow tune 
02 GMC RC 4x4 Maxed Out Racing Prostreet race truck. (building)
03 Chev RC 4x4 Maxed Out Racing Superstreet Race truck Maxed out racing Subman, Nathan Wright of MPI, Rob Coddens of ATP |