Originally posted by stumper
I had a similiar problem and after emailing novak they told me to set the throttle trim all the way up, But I cant remember if it was either all the way brake or throttle. Only my problem was with a dually not the gtx. And I do mean the trim, not the EPA.
I could give that a try, they said something about a 7:3 ratio or 70 throttle and 30 brake or something, but i'll try your thing right now and let you know..