Join Date: Jan 2009
Thanked 64 Times in 60 Posts
Yeah, that sounds like a box, programmer, or injectors. Something of that nature. Usually those mods do alright for increasing milage though, depending on what it is. Most Boxes and programmers change Parameters such as timing to help with power and throttle response and they also help out fuel economy. Injectors, it depends on the injectors, some help milage because of improved spray patterns, and others hurt it, because they just hone out the stock holes, making them bigger and lowering injection pressure.
Its hard to say what your truck has done to it, but it shouldn't put out much noticable smoke if its stock.
However, your altitude could have a bit of an effect on things too. I see your from the Grand Canyon area. I was down in Flagstaff a little over a year ago, and my truck smoked quite a bit down there, and it doesn't have that much done to it. Also, EGT's can get dangerously hot, real easy at altitude, I could peg 1800* no problem. I'm not sure how high you guys are, but I would look into getting a pyro ASAP, especially if your truck is smoking, you could be running really hot.
2000 2500 reg. cab 4x4 auto 577hp
09 6.7L QC LB stick, 4x4.
TOTAL PERFORMANCE DIESEL 707-545-FUEL (3835)