I have had the intune (non i2) for about 2yrs now. My initial thought when I read your post was I dont think mine does that. But sure enough on my drive home today I purposely drove the slower steady speeds and paid attention and mine acted the same way. From about 25 to 35 it starts at about 1200 and climbs RPM up to about 1700 then shifts, does the same thing again from 35 to 45 before shifting, and again will do it from 45 to 55. It seemed to really want to hold the gear and the higher RPM if you kept the speed steady like you said. I usually dont drive the slower speeds, most always 55mph roads or 70mph freeway but I have not noticed any drop in mpg with the tune installed. And this is with testing the different tune combinations pretty well over the past 2 yrs. I've tested having AFM off for one month and I lost 1mpg so I keep it on. AFM seems to work flawless in my truck. I've settled on mostly using the diablo tune with firm shift and using E85. I agree with dirtymacus's post, the tune is probably made to hold the higher rpm for better power and throttle response. I've been pretty happy with it for a canned tune. These trucks can really get up and go!