It's one of the parameters you can change on the Smarty. I do have tnt-r but, I thought it was a part of tnt's software too. Which do you have ?
The ecm defuels the truck if it's rpm's are going up and it's not going anywhere.... for lack of a better explanation. The shift limiter turned off overrides that.
unless the video is back, when I went there it said it was removed
tryed to watch the video got this
"This video either has been removed from Facebook or is not visible due to privacy settings."
on my tnt- i dont have the shift limiter on/off (maybe- its only regular revo??? but i dont think so - bob preloaded it for me)
sorry about the facebook thing- i guess have to be his friend to see it-- i will get it up tomorrow