Search results

  1. 0

    New to duramax owner

    Hey guys, just bought my first Duramax. 07 3500 LBZ all stock with 100,000 miles on it. I really just want a little better mpg and a bump in HP when towing my 5th wheel. I don't want to tear up the truck, its in great shape and I want to have it for a long time. I see so many options so I just...