Symptoms are:
I was driving very slow and I heard an increase in injector sound, as if I switched to the chipped setting and then back and forth. Also, intermittently under very light throttle, the same sound occured and the truck mildly hesitated. I believe it only happened in a chip setting and it very intermittent. I drove it around the next day and it was flawless. I noticed in the chipped setting, the idle dropped from 700 to 665 or so and then right back up. Under more aggressive acceleration, it was flawless. What do you think?