11. I am running non-stock injectors. Is this a concern?
Running larger than stock injectors is not a concern for the Eco tune or for the Atlas 40 tune, but some have noted that their truck 'lopes' and 'hunts' to find a good idle with the Atlas 80 or Hercules tunes. Some with larger injectors have also noted that the truck does not run smoothly until warm and/or dumps black smoke until warm with the Hercules tune.