I pull in 4 low 3rd gear. I have tryed 4th last year at tuckhoe an lossed power ,run out of wheel speed. The other d-max that got 2nd he pulled in high 1st I have never tryed that its got to harder on the tranny.
i pulled 4hi 1st all last year, my stock trans wouldnt shift into 2nd in 4lo with a load on the truck.