I usually run 3x3 or 3x2 and it get pretty good mpgBillysgoat said:For max mileage try running some of the higher settings with some fuel pulled back, buddy of mine claimed 4x1 gave him the best mileage, for me it was always 2x3 or 3x3.
as for the smoke I can smoke out an intersection or a shop on 5x5. She'll dump lots of $$ or smoke out the pipe.