forrest is right. we just towed a parachutte of a trailer and we were playing with the comp on 3x1 then to 5x5 we noticed a decrease in egt's. So we ran it that way the whole time, we weren't towing very heavy but the trailer was a parachutte, through some pretty hilly terrain, cruise set at 70 not a problem.
On second thought i would probably turn down the low boost fueling just to try to keep it clean on the slow take-offs.