I recently installed a new set of Accel 26# injectors in my 2000 K3500 7.4 crew cab dually. I should have researched better on what size the original ones were. It runs and drives but it is running extremely rich through the entire range. It seems to be less noticable at 70 mph than 35 or less. What I need is options to lean it out and tune it up for a free flowing exhaust (full 3" with dual FlowMasters all the way to the bumper). Thanks for any help you can share.