So I was heading back home from my 2 week rotation when I noticed in 6th gear speeding up from 55 to 75 that the truck would have a stair step acceleration/pulsing acceleration where it would be on, off, on, off. At first I thought it was the cruise control but then I would push the accelerator and at first the turbo didn't seem to spool, then it would, the let off then pull again. This was most noticeable with the selector on 0hp mode. After a few pulls so I could record it with my ezlink the air filter restriction message came up. The filter on my AFE intake is new. ECM airflow restriction/air leak between filter and MAF showed up in my ezlink. Now its also showing U1266. No check engine light but these are the codes im getting on the ezlink. Going to check to see if maybe the maf sensor is dirty. I have some MAF cleaner so I'm going to spray it and reset the codes to see what happens.