I get lots of smoke from putting programing the extreme tune into my truck with my predator. I would say you pretty much have to start with a good programmer that adds fuel.
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05 3500 Larmie 4X4 Q/C Long box Diablo Predator,Boost Fooler AFE stage II, Isspro guages pillar mount, Cat gone, DynoMax muffler, Revtec leveling kit, Billet tripple disc low stall TC