I've never gotten any smoke out of mine.
Some of you guys complaining abut mileage are lucky, imo. I get 12.5-13.5 mpg unloaded. Loaded with 8k I drop to about 11.0 mpg. I dread seeing how bad it gets pulling 15k.
Someone said there was a flash available 8/31/07. Thanks for the info. I wasn't aware and my truck needs it.
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98.5 2500 4x4 Reg Cab, 6" GrandRock Stacks, Adrenaline w/ Pulse, FASS 150, Isspro egt/boost/fuel, silencer ring MIA, Auto to NV4500 swap, 2.5" level w/ 315 Cooper ST's
07.5 3500 6.7L G56 Manual 4x4 Quad Cab Dually -dpf delete in garage